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Magene Outdoor/Indoor Speed/Cadence Sensor for Cycling, Wireless Bluetooth/Ant+ Bike Computer RPM Sensor for Road Bike or Spinning Bike and Trainers Compatible with Onelap, Wahoo Fitness, Zwift, Strava

4.1 4.1 out of 5 stars 5,873 ratings
$16.99
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1 Outdoor Cad/Spe Sensor
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Purchase options and add-ons

Brand Magene
Product Dimensions 1.17"L x 0.33"W x 1.51"H
Item Weight 9 Grams
Sensor Type Speed Sensor, Cadence Sensor
Battery Cell Composition Lithium Manganese Dioxide

About this item

  • [Battery] Remove the insulating sheet of the pre-installed battery before usage; re-install the battery to switch between the speed and cadence mode.
  • [Mode] 1 sensor can ONLY select one mode (Speed or Cadence) at the one time.So you need 2 sensors to test both speed and cadence.(1 for speed,1 for cadence)
  • [Device] When using the Bluetooth protocol 1 sensor can ONLY connect to 1 APP or device concurrently; When using ANT+ protocol it can be connected to multiple devices at the same time.
  • [Connection] When using a smart phone APP, you need to search for the sensor in the APP, searching through the phone system’s Bluetooth setting is invalid.
  • [Hibernation] S3+ sensor will automatically enter the sleep state for 1 minute to save power after the sensor is stationary, the sensor will ONLY start sending broadcasts after it is properly woken-up.

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Product Description

2

1

2

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IP66 Waterproof

IP66, With excellent waterproof and dustproof performance, enjoy your cycling every day in all weather.

Speed /Cadence Sensor

Reinstall the battery until the Red light flashes to indicate the cadence mode.

Reinstall the battery until the Green light flashes to indicate the speed mode.

ANT+& Bluetooth Dual Protocol

The wireless connection is accurate，fast, stable and does not require magnet sensing. It is the best companion for GPS bike computers or smart phone apps. High accuracy, low latency, never lost signal.

(When using Bluetooth, you need to search for the sensor in the app or Bike Computer, searching through the phone system’s Bluetooth settings is invalid)

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2

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For Bike Computer

For Garmin; Wahoo; IGPSPORT; Bryton; Magene

For Indoor Trainer

For Tacx; Zwift; Bkool

For Smart Watch

For Garmin

For Smart Phone Apps

For Zwift, Wahoo Fitness, Onelap, Openrider, Cyclemeter

Product information

Technical Details

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Magene

Magene Outdoor/Indoor Speed/Cadence Sensor for Cycling, Wireless Bluetooth/Ant+ Bike Computer RPM Sensor for Road Bike or Spinning Bike and Trainers Compatible with Onelap, Wahoo Fitness, Zwift, Strava

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Customer reviews

4.1 out of 5 stars
4.1 out of 5
5,873 global ratings

Customers say

Customers like the performance and value of the cycling computer. For example, they mention it works well and pairs easily with their Edge 830 and 130+. That said, some complain about connectivity and sensor issues. They say the device loses connectivity and the sensor doesn't wake up. They also dislike the battery life and durability. Opinions are mixed on accuracy.

AI-generated from the text of customer reviews

185 customers mention150 positive35 negative

Customers generally like the performance of the cycling computer. They mention that it works well, pairs easily, and has no issues. Some say that the second sensor works well for speed and that there are no dropouts when the speed refreshes or when the signal is lost.

"...following the instructions and putting the mat there, everything started working perfectly...." Read more

"Works well and paired easily with my Edge 830. Good value for the money." Read more

"...They both seem to work the same; they turn on when the wheel or cranks spin, and shut off a minute or so after I discontinue use...." Read more

"...to an old Garmin cadence sensor, was easy to set up and worked perfectly. Back to Zwift!!!..." Read more

156 customers mention133 positive23 negative

Customers find the setup of the cycling computer to be easy. They mention that the sensor is easily installed by wrapping the supplied rubber band, and the pairing is a snap. Some say that the product pairs easily with their Edge 830.

"Works well and paired easily with my Edge 830. Good value for the money." Read more

"...Initializing the units was easy...." Read more

"Purchased as replacement to an old Garmin cadence sensor, was easy to set up and worked perfectly. Back to Zwift!!!..." Read more

"...Installation was fairly straightforward, although the battery remove/reinstall to change it from speed to cadence is clumsy, and it times out pretty..." Read more

98 customers mention74 positive24 negative

Customers like the value of the cycling computer. They say it's a good buy, especially compared to other brands.

"...see how long it lasts, but for now I'm happy, particularly with the low cost." Read more

"Works well and paired easily with my Edge 830. Good value for the money." Read more

"...I find the Magene sensors to be a great value and I get accurate data on how I am performing in my workouts...." Read more

"...This one is not good. Incredibly difficult to open, resorted to using teeth. Sensor does not stay on long enough to connect Bluetooth devices...." Read more

95 customers mention49 positive46 negative

Customers are mixed about the accuracy of the cycling computer. Some mention that the sensor appears to give good data for cadence, while others say that the speed it reports is not accurate. They also mention that there is inconsistency of the cadance value and that the refresh rate is a little slow.

"...Counts cadence like a champ. a couple years ago I bought a Magene heart rate monitor...." Read more

"...Speed is harder to verify since the GPS can calculate speed without the speed sensor. The sensor just makes it more accurate...." Read more

"...Otherwise...==Cadence is working really well for Zwift, sensor is mounted to crank arm on bike, and laptop is using an Ant+ dongle..." Read more

"...Because of the inaccurate numbers, my max cadence is way higher than it should be,i cant reach what it shows for even a second...." Read more

27 customers mention8 positive19 negative

Customers are dissatisfied with the durability of the cycling computer. They mention that the bands broke on their initial ride, the secure sensor to bike pedal broke within an hour, and the rubber loop will eventually break. Some say that the product is not durable and the battery broke off the first time they removed it.

"...and the second rubber band broke when I was trying to remount the sensor on my crank..." Read more

"...One time, I stomped and it tore the band and I didn't realize it, until I was about 1/4 mile down from the light...." Read more

"...The Garmin's hub mount is a little nicer, but both are adequately secure. Both are waterproof. Size is similar. And pairing works exactly the same...." Read more

"...Using the larger o-ring, it doesn't feel terribly secure, but hasn't fallen off yet. Super easy to pair and use with the wahoo app...." Read more

112 customers mention32 positive80 negative

Customers have issues with the connectivity of the cycling computer. For example, they mention it has problems pairing with their Garmin Edge computer, and the sender connection begins to fail. Figuring out app connectivity was a bit arduous, and it keeps disconnecting. Some say that the connection to the watch not sticks and requires re-pairing every time they get.

"...That led to the connection to the watch not sticking and required re-pairing every time I got on the bike...." Read more

"...my rating is for the accuracy -2* and drop in connection (elevation and bump -2*) of the sensor and not with the customer service at all, that would..." Read more

"...similar battery life, similar waterproofness, and identical device pairing with Garmin Edge GPSs, to me it's easy to conclude that buying these at..." Read more

"...Update 11/26/20: Turns out the issue was incompatibility of cadence sensors with the Kinetic Fit app...." Read more

105 customers mention24 positive81 negative

Customers are dissatisfied with the sensor of the cycling computer. They mention that it doesn't work properly, the speed sensor never pairs reliably, and the cadence sensor stopped working after 5 months of use. The sensor won't get picked up by using the settings in Occulu Quest 2. Some customers also say that the sensor on their road bike was flaky and dropped after 4 days of installation.

"...Incredibly difficult to open, resorted to using teeth. Sensor does not stay on long enough to connect Bluetooth devices...." Read more

"...and a couple of days later when i actually went cycling, the sensor wouldn't connect so reseted it on the road and then it worked, that so far only..." Read more

"...The speed sensor stopped working the other day. i assumed a bad battery, but it checked out at 2.95V. Which I think should be fine...." Read more

"...This sensor can measure either cadence or speed, and you pull the battery to switch between the two...." Read more

48 customers mention3 positive45 negative

Customers are dissatisfied with the battery life of the cycling computer. They mention that the batteries lasted nowhere as long as their Garmin set of sensors, and that the unit died at just 3 months. Some customers also say that the factory LISUN batteries seemed to be drained and that a new battery did not fix the issue.

"It worked fine and just stopped working one day and new battery did not fix. Used on indoor cycle bike so wasn’t roughed up outside...." Read more

"...on Friday and the first unit still did not work and the second unit failed during the ride. Brought both units inside and checked the batteries...." Read more

"...So the early low battery on one and the inconvenience of no indication of a sensor's role when..." Read more

"...Update on battery life: These don’t last as long as the name-brand sensors that came bundled with my bike computer...." Read more

Impressive!
5 Stars
Impressive!
I use the Magene speed/cadence and Wahoo heart rate monitor with Cadence App. You can see the speed sensor literally taped to my Spinner front wheel. In the settings of Cadence you can adjust the wheel size for accuracy. I had a analog Cateye on my spin bike for years. The speed and cadence of the Magene sensors essentially mirrors what the Cateye readouts were. I will say the refresh rate is a little slow at times but very functional and accurate in my opinion. I like that there are no more wires on my bike and the functionality of using my phone for the monitor and storing the data from my workouts. If you choose to use Cadance App know this. When you add the sensors they will both show up side by side and you will think your done. You can select one sensor for each "add a sensor" so you must add them both again, select speed on one and cadance on the other and all is good. I find the Magene sensors to be a great value and I get accurate data on how I am performing in my workouts. In the images you will see the installation and the riding screen and the data output.
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Top reviews from the United States

M. Walker
5.0 out of 5 stars So far, so good - one tip
Reviewed in the United States on February 26, 2024
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
This replaced a "CoolSpo" cadence sensor that I bought 3 years ago and abruptly stopped working for no apparent reason some months ago. That and this device are on a indoors stationary bike and communicate with my Garmin watch. Here is my tip: when I first installed this, I neglected to install the small rubberized mat between the sensor and the crank. That led to the connection to the watch not sticking and required re-pairing every time I got on the bike. When I went back to following the instructions and putting the mat there, everything started working perfectly. This sensor can measure either cadence or speed, and you pull the battery to switch between the two. Now that the pad is installed, the watch now sees it very quickly. We'll see how long it lasts, but for now I'm happy, particularly with the low cost.
2 people found this helpful
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Glen
5.0 out of 5 stars Good value
Reviewed in the United States on February 24, 2024
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
Works well and paired easily with my Edge 830. Good value for the money.
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davido
4.0 out of 5 stars Works just as it should, at a fraction of the "name brand" cost.
Reviewed in the United States on April 20, 2021
Verified Purchase
I purchased the two-pack so that I could use one as a speed sensor, and one as a cadence sensor. I intended to use them with my Garmin Edge 1030 Plus cycling computer and GPS.

I was skeptical when I ordered. The Garmin Speed Sensor 2 and Cadence Sensor 2 bundle costs more than twice the price of this aftermarket two-pack. So I assumed something would be lacking. Maybe I wouldn't be able to pair both at the same time (speed and cadence) as I had seen in some reviews. Maybe the speed sensor would require manual calibration. Or maybe they would be substantially inferior quality. None of these fears turned out to be warranted.

Unpacking: The two sensors were in one anti-static wrap, and included in the package were two rubberized backing pads, and four elastic band mounting straps (two of each of two sizes).

Initializing: After opening the battery compartments, you must remove a piece of packaging that prevents the battery from discharging prior to use. Upon closing the compartments again, one sensor initialized with a green LED, and the other red. The LED color tells which mode (speed or cadence) the sensor is in. It's important to pay attention to which is which so that you install the correct one on the wheel hub, and the correct one on the left crank arm. Initializing the units was easy. If one had initialized in the wrong mode, simply removing and reinstalling the battery will switch it back to the desired mode.

Installation: Insert the rubberized backing strip, then strap the speed sensor around the bike's wheel hub, and the other around the left crank arm for cadence. The straps fit correctly. Compared to the Garmin unit, the cadence sensor fits exactly the same. The Garmin speed sensor incorporates a hub form-fitting rubberized housing integrated into the strap. The aftermarket speed sensor does not have the form-fitting housing. Yet it stays secure around the hub none the less. So the Garmin Speed Sensor 2's rubberized housing is a nice touch (at 2x the price), but not necessary.

Pairing: On the Garmin Edge computer tap settings, sensors, add a sensor. Select speed for the hub-mounted sensor. Give the bike wheel a spin. The sensor will be displayed with some ID number. Tap that one, and tap add. If you want, go back in and edit the sensor name to change the numeric ID to a name that is recognizable. This is particularly useful if you have sensors on multiple bikes. For the cadence sensor repeat the process: Settings, Sensors, Add a Sensor, Cadence, spin the cranks, then tap the ID of the sensor that pops up. Optionally edit its name so it's recognizable.

One thing that I feel is worth mentioning: I expected that I would have to manually calibrate the wheel size. The Garmin Speed Sensor 2, when paired with a new enough Garmin Edge (520, 520+, 820, 530, 830, 1030, 1030+, and possibly others) will auto-calibrate the wheel size. But I assumed that feature wouldn't work with this aftermarket sensor. Nevertheless, I set it to auto calibration mode and went for a ride. After about a mile the Garmin Edge 1030 Plus indicated that auto-calibration of the speed sensor was complete. So to my pleasant surprise, this aftermarket sensor will work with Garmin's auto-calibration for wheel size. Great!

Test ride: I took this set for a brief five mile ride, and then looked at the results. There were no drop-outs in cadence other than when I wasn't actually pedaling anyway. Speed is harder to verify since the GPS can calculate speed without the speed sensor. The sensor just makes it more accurate. But there were no notifications of losing a connection to a sensor, so I assume speed was working fine. Certainly the GPS home screen did indicate that both were connected and sending data. The speed and cadence data seemed indistinguishable from when I use Garmin name-brand sensors on my other bike.

Comparison to Garmin Speed Sensor 2 and Cadence Sensor 2: I have both the Garmin sensors and these aftermarket sensors. They both seem to work the same; they turn on when the wheel or cranks spin, and shut off a minute or so after I discontinue use. Their estimated battery life is similar too. The Garmin's hub mount is a little nicer, but both are adequately secure. Both are waterproof. Size is similar. And pairing works exactly the same. In my case, I even have both the Garmin sensors and these aftermarket sensors paired to the same Edge cycling computer. When I use one bike, the GPS detects one set. When I use the other bike, the GPS detects the other set. They work the same. The biggest difference is I paid $80 for the Garmin sensors as a set, and less than $40 for these aftermarket sensors as a set.

I really think the ability to switch between speed and cadence mode by reinstalling the battery is a nifty piece of engineering. I'll never switch them after initial setup. But it does mean you can buy one, or two, and then decide how you want to use them.

One thing I see people ask sometimes: If a GPS detects speed, why would someone buy a speed sensor? There are three reasons. First, if you're using an indoor trainer, you can mount the speed sensor on the rear hub and still get speed data despite the fact you're pedaling away on a trainer in the basement. Second, if you're mountain biking in terrain with steep mountains and tree cover, or if you're riding downtown in urban settings with tall buildings blocking GPS signal, you'll experience fewer drop-outs in speed data. Third, is accuracy. Even if you're a suburban road cyclist like I am, the speed sensor improves the accuracy of speed reporting of the GPS, and also decreases the latency between speed changes and reporting on the device of the speed change. And that's why I have the speed sensor; just to improve the accuracy and latency of speed reporting.

Conclusion: At half the price of a set of Garmin sensors, and providing the same sensor information to the GPS, with the same mounting for cadence, and nearly the same mounting for speed, and with similar battery life, similar waterproofness, and identical device pairing with Garmin Edge GPSs, to me it's easy to conclude that buying these at half the price is the best choice. I have both a set of Garmin sensors, and a set of these -- one set on each of my two bikes -- and if I had it to do over, I'd save the $40 and go with two sets of these instead. It could be that these will wear out sooner, though I rather doubt it; there's not a lot that can go wrong with them.

There are two reasons I gave four stars instead of five: First, I like the hub-hugging design of the rubberized shroud that comes with the Garmin Speed Sensor 2 better than I like this aftermarket sensor's flat rubberized backing strip. In use, it makes no practical difference, though. But the Garmin design is slightly nicer in that one regard. I don't really feel that piece of rubber justifies a $40 price difference for the set of sensors, though.

The other reason for four stars is this: The product listing claims IP67 weatherproofness: dust proof and submersible to 1 meter for 30 minutes. But the packaging and instructions list the weatherproofness as IP66: dust proof, and heavy seas splash resistant. Meanwhile, the Garmin devices are listed as IPx7: no specific dustproof rating, but submersible to 1 meter for 30 minutes. If this device is IP67, it's rated better than the Garmin at IPx7. But if it's IP66 as the packaging and instructions state, it is less weatherproof than the Garmin, but potentially more dustproof. This ambiguity (the uncertainty because the product listing's specifications differ from the specifications on the packaging and instructions) warrant a 1-star deduction.

I've seen reviews that suggest the rubber bands that strap these devices into place aren't durable. I haven't had them long enough to have encountered a failure. If I do encounter a failure in the first year, I'll deduct another star. But for now, 4-stars stands.
92 people found this helpful
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Kindle Customer
5.0 out of 5 stars Not as good as it's predecessor
Reviewed in the United States on April 8, 2024
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
I bought this to replace the same sensor that I had on a previous bike that I forgot about and gave away. This one is not good. Incredibly difficult to open, resorted to using teeth. Sensor does not stay on long enough to connect Bluetooth devices. The first version I had bought was perfect. This is trash.
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N. A. A
1.0 out of 5 stars my sensor shows inaccurate cadence
Reviewed in the United States on June 4, 2022
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
sensor is dissapointing. after i received it i connected it initiallly and a couple of days later when i actually went cycling, the sensor wouldn't connect so reseted it on the road and then it worked, that so far only happened once.

the problem now though is that everytime i go cycling, i have not once received overall accurate reading with the sensor. to be precise, everyone once in a while the count would jump to 130+ and so on or drop completely and then it would do the same, but otherwise it would stay at or around the correct rate for some time but then it would mess up again temporarily, also in slight elevation it would just disappear for a short period, same as with some bumps but not all which i noticed last night. Because of the inaccurate numbers, my max cadence is way higher than it should be,i cant reach what it shows for even a second.

i messaged the seller regarding this but no response at all, lucky for me i still have time to return it so i will just contact amazon in the next couple of days after i have found a replacement and return it.

advice for anyone who wants to buy it, if you receive a good sensor, bless you, you got one for cheap, but if its bad or has issues, dont hold your breath for their reply. i understand now why their are some reviews regarding communication.

my rating is for the accuracy -2* and drop in connection (elevation and bump -2*) of the sensor and not with the customer service at all, that would be lower
Customer image
N. A. A
1.0 out of 5 stars my sensor shows inaccurate cadence
Reviewed in the United States on June 4, 2022
sensor is dissapointing. after i received it i connected it initiallly and a couple of days later when i actually went cycling, the sensor wouldn't connect so reseted it on the road and then it worked, that so far only happened once.

the problem now though is that everytime i go cycling, i have not once received overall accurate reading with the sensor. to be precise, everyone once in a while the count would jump to 130+ and so on or drop completely and then it would do the same, but otherwise it would stay at or around the correct rate for some time but then it would mess up again temporarily, also in slight elevation it would just disappear for a short period, same as with some bumps but not all which i noticed last night. Because of the inaccurate numbers, my max cadence is way higher than it should be,i cant reach what it shows for even a second.

i messaged the seller regarding this but no response at all, lucky for me i still have time to return it so i will just contact amazon in the next couple of days after i have found a replacement and return it.

advice for anyone who wants to buy it, if you receive a good sensor, bless you, you got one for cheap, but if its bad or has issues, dont hold your breath for their reply. i understand now why their are some reviews regarding communication.

my rating is for the accuracy -2* and drop in connection (elevation and bump -2*) of the sensor and not with the customer service at all, that would be lower
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2 people found this helpful
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TheFlyingSow - M Sakamoto
5.0 out of 5 stars Perfect
Reviewed in the United States on January 15, 2024
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
Purchased as replacement to an old Garmin cadence sensor, was easy to set up and worked perfectly. Back to Zwift!!!
Happy with performance, will definitely buy it again in the future
2 people found this helpful
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Chef Dave
3.0 out of 5 stars Good product - but if you have a spinning bike...
Reviewed in the United States on July 3, 2022
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
I have two of these; one for cadence and one for speed/distance, on a commercial spinning bike. Installation was fairly straightforward, although the battery remove/reinstall to change it from speed to cadence is clumsy, and it times out pretty quickly, so be ready to link it when you reinstall the battery.

Cadence went well - stays securely on the crank arm and reports reliably. Speed is another matter - at speeds over 25 mph, it's very inconsistent, bouncing between 10-12 mph and the 'real' speed, after calibrating it to actual wheel circumference. I chalk that up to the smaller wheel diameter on a spinning bike; that wheel is spinning much faster than a road or mountain bike at those speeds, and seems like the device can't keep up. I'll experiment with moving it from being attached to the hub to Velcro mounting it out further on the wheel so it's not inverting so quickly and see if that works.
6 people found this helpful
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Top reviews from other countries

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RENE SOSA
5.0 out of 5 stars Excelentes
Reviewed in Mexico on November 6, 2023
Style: 2 Outdoor Cad/Spe SensorsVerified Purchase
Tal como lo mencionan.
Funcionan a la perfección, mi esposa y yo hacemos ciclismo de ruta y nos hacia falta el sensor para registrar la cadencia y estos sensores fueron perfectos.
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Linda garrafa
5.0 out of 5 stars Tudo certo
Reviewed in Brazil on September 13, 2023
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
Tudo certo funcionando perfeitamente
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gelbe ente
5.0 out of 5 stars Leichte Montage, Funktioniert perfekt.
Reviewed in Germany on March 6, 2024
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
Die Montage mit dem gelieferten Gummi funktioniert einwandfrei. Um den Geber aber vor Verlust im rauhen Alltag und bei holpriger offroud Fahrt zu schützen, habe ich ihn zusätzlich mit einem Kabelbinder fixiert. Nur dem Gummi würde ich nicht trauen, daher 1 Stern Abzug. Die Koppelung mit der Polar grit x pro verlief schnell und reibungslos. Da Alles perfekt war, habe ich mir gleich einen zweiten Geber für das Rennrad geholt. Die Trittfrequenz wird perfekt gemessen und in Echtzeit auf der Uhr angezeigt und gespeichert. Die Geschwindigkeit messe ich über die Uhr, deshalb habe ich den Geber in der auf die Geschwindigkeitsmessung getestet.
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fabio
5.0 out of 5 stars Funziona bene
Reviewed in Italy on January 26, 2024
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
Ottimo sensore, facile da configurare coi garmin edge 1040, piccolo e leggero. Prodotto pari ai sensori garmin originali con prezzo molto minore.
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Dani
5.0 out of 5 stars Buena compra
Reviewed in Spain on January 25, 2024
Style: 1 Outdoor Cad/Spe SensorVerified Purchase
Funciona perfectamente, para la aplicación Zwift, fácil instalación
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