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Wireless Cyclometer 500

Sale price: $34.99 Regular price:
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Sale price: $34.99 Regular price:

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8382192

Product Videos

Product Features

Wireless Cyclometer 500 is designed for regular cyclists wanting to measure their performance.

Discreet and very easy to install (magnet-free sensor that mounts on the wheel hub): 8 basic functions with wireless transmission at up to 10', allowing mounting on the rear wheel.

A photo of the Wireless Cyclometer 500 in use

Measurement settings

Current/average/max speed, total/ride distance, time, stopwatch, temperature.

Easy assembly/dismantling

Easy to fit. Magnet-free sensor mounts on your wheel's hub.

Easy to use

3 easily accessible buttons. Very simple, intuitive menus.

Easy to read

Large figures and back-lit display to make it easy to see, even at night.


Watertight assembly, durable case.


You can install your sensor on the back wheel for using a turbo trainer.

Product Lifestyle Image Gallery

Image Gallery

Wireless Cyclometer 500,black 

Wireless Cyclometer 500,black 

Wireless Cyclometer 500,black 

Wireless Cyclometer 500,black 

Wireless Cyclometer 500,black 

Wireless Cyclometer 500,black 

Wireless Cyclometer 500,black

Product Customer Reviews

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Wireless Cyclometer 500,black
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Nice Bike Computer

Really nice bike computer. I use it with my touring and road bikes. Its easy to remove and put on different bikes. Can also be used along with a home trainer (not smart) to see the speed you are going at. Unfortunately it doesn't come with a cadence sensor, or an option to upload it onto Strava etc.

Heavy on the batteries/ appalling mount

I have had two of these the first one I lost as other reviews have stated the mount is shocking - you hit a bump it is liable to come flying off which is what happened to me the first time. I bought a new one and could then switch between bikes as had two mounts and two sensors-it is easy to set up. I have now got it on my sons bike and he loves it but it is so heavy on batteries We are on the third lithium battery for the computer itself and second for the sensor and it’s done no more than 600 miles according to odometer. The batteries I am using are branded too. I think there is too much information on the computer for a consumer paying 20 needs or should expect. If mount sorted it’s good and I have the btwin wired entry computer at 7.99 which never falls out and has done 1100 miles on batteries it came with!!!

I loved it.....until it fell off the bike!

Great little computer which I purchased for the specific point that the sensor can be fitted to the rear wheel on my road bike making it ideal for a Turbo trainer. Unfortunately I made the mistake of leaving it on the bike when I went for a ride out in the big wide world and at some point during it's first outing it decided to 'bail out' & parted company with the bike - never to be seen again! I would absolutely recommend this computer if you intend to only use it on a turbo trainer, but I would advise that you remember to remove it before venturing out on the open road as the feeble mounting system just cannot be trusted to keep it secure & on your bike. I guess I'm now going to have to shell out for a replacement to use on my turbo trainer.

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Has not worked since purchase. I have sent three (3 !!!) emails to Decathlon and received NO response - NOTHING.

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Good computer, terrible mount

This was easy to set up and connect on the bike. I used it for several rides with the bike on the trainer and was happy with the performance. However, on my first outing on the road, within a couple of k the computer had fallen off the mount and was lost in a grass filled ditch at the side of the road. Unfortunately I couldn't find it so that was that, completely wasted money. I wish I had read all the reviews before buying as this obviously a very common problem and clearly a design fault. It's a shame because the computer was perfect for what I wanted.

Hello Heather. Thank you for leaving a review and I'm very sorry indeed to hear that the computer was lost on the first outing! Please do get in touch with our Customer Loyalty Team to arrange a replacement to be sent to you asap.

MICHAEL, Road Cycling Leader, DECATHLON UK

Ok apart from cradle

Love the hub sensor, but the mounting cradle for the computer itself is terrible, if you take it on and off a couple of times it starts to feel very loose. Please rectify this Btwin apart from that it's good.... but it will fall off your bike

Hello. Thank you for your valuable feedback on the bracket of the 500 computer. Your feedback has been passed on directly to the Product Manager to review and for quality control. Please do take it to your local store once it is open again for the bracket to be checked and exchanged or returned.

MICHAEL, Road Cycling Leader, DECATHLON UK

Very fustrated

After one week (BTWIN 500 ) of use it stopped working. I put in rubbish bin. Not recommended.

Hello! Thank you for your feedback on this bike computer. If you still have it, please do return the product to your local store once it is open again so that any problems can be investigated further by a member of staff. Alternatively, you can also contact our Customer Loyalty Team to exchange or return the product as covered by the 2 year guarantee on all Decathlon branded items.

MICHAEL, Road Cycling Leader, DECATHLON UK

Too early to tell

Had the same model (Black). It was loose when fitted on the clip mounted on my bike and it fell off a few times when I was riding. So I tuned it harder against the mounted giving it a lopsided appearance. When I changed to a new battery all my mileage records were lost. So I threw it away after many frustrating attempts to restore my lost data. After some time I bought this Blue model and it really fitted well on the mount. Now I have to wait when I change the battery and see if the same thing happens. Best Regards Derek Chua

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Hi Derek!

Thanks for taking the time to review our 500 Wireless Cyclometer - Blue

We had previously heard the feedbacks regarding the previous black model and had worked on improving the mount for our new models!
It should not be loose anymore so you can continue and cycle in confidence and peace of mind.

Regrettably, our cyclometer still doesn’t have a programmable odometer function therefore we are sorry you won’t be able to manually enter your total mileage onto this computer when you change you battery.
We'll be informing our production team on your feedbacks and hope we'll be able to serve you again in Decathlon!

Cycle harder, go faster.
B'Twin Decathlon Singapore
Good for the price

Simple, easy to use and affordable. All over satisfied.

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Hi Masudul!

Thanks for taking the time to review 500 Wireless Cyclometer - Black!

I too enjoy the fact that it is easy to install and that it comes with a backlight allowing us to see the cyclometer in the dark!

Do you know, this model now comes in 2 other colors, namely green and blue and have the same functions allowing you to explore personalising your bike.

We are happy you are satisfied with the purchase and we hope to see you in Decathlon again soon =)

Cycle harder, go faster.
B'Twin Decathlon Singapore
can anyone work this thing

Still haven't managed to get this to connect

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Hello. Sorry to hear you're having problems with the 500 Wireless computer. Please do contact our Customer Loyalty Team who can source the technical support needed to get it up and running and tracking those miles in the saddle!

MICHAEL, Road Cycling Leader, DECATHLON UK

battery died just after a month of purchase

store should atleast take responsibility of the issues all they said was to buy new battery. They don't even had spare battery to check whether the device had battery issue or something else

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Hello Syed,

Thank you for taking your time to provide us your valuable feedback, this helps us improve continuously.I apologize that the product has not met your expectations. Your feedback about the battery of the 500 computer has been mentioned by some other riders but not a regularly recurring issue so we are looking in to it nonetheless. In the meantime, if you would like to exchange the computer to our store teams will be happy to change for a new one.

I stay available for any further queries related to our products and services.



very poor visibility in night

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Cycle Computer

Really good large display covers needs ( really do you need Temp as on some) magnet sensor fits on hub so no unit on forks (really good idea) I have a Cateye on my hybrid I’m swapping this on to it. Bit of a fiddle to set up but it does make sense (pictograms for instructions) . Very pleased

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cyclometer Every100 km. Meter shows 93.5 km.

cyclometer not working Properly. Every 100 km Meter shows 93 to93.5 km 6.5 to 7 percent slower. Also Battery i.e.cell discharged within 4 days. 500 km Ride. and then Recording stoped.

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Hello Shrimant,

Thanks for sharing your feedback for bike computer. I apologies for the inconvenience caused to you. We have noticed few similer issue out of thousands of quantities. Therefore we have decided to stop this model and introduce the new model in our range. I request you to visit the nearest decathlon store and get the exchange done.

For further assistance,I stay available.


Fails easily

I bought mine not too long ago and the components inside started failing and when i took out the battery to see what wrong as I couldn’t even on it something small came out but I couldn’t figure out what it was

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Additional Product Information


Inner tent

  • 40% Alloy
  • 20% Printed circuit board
  • 20% Silicium
  • 20% Copper


  • 80% Acrylonitrile butadiene styrene
  • 10% Epoxy
  • 10% Rubber - Styrene butadiene rubber


  • 100% Cellulose

Speed function

Current speed. Average ride speed. Maximum ride speed.

Distance function

Ride distance (distance covered on that ride). Total distance (since you installed the cyclometer).

Time function

Time. Stopwatch (automatic start/stop).

Other functions

Temperature. Back-lit screen (for lighting it up at night). Automatic start/stop.

Magnet-free sensor

An innovative sensor that fits on the wheel hub and detects speed using a magnet-free gyroscope. It's therefore really easy, fast and reliable to install. 2.4 GHz digital transmission. No interference possible. Communicates with the cyclometer over up to 10'. You can therefore mount it on the rear wheel and use it with a turbo trainer. NOTICE: This technology is not compatible with rough terrain and may display speed incorrectly.

Perfect for the home trainer

Thanks to the sensor, which can be fitted directly to the hub, this cyclometer is perfect for Home Trainer use. It will show the distance you traveled as well as your speed. Perfect for winter indoor training sessions!


CR2032 (1 in the cyclometer + 1 in the sensor).


Case: Height x width x depth: 2.5" x 1.6" x 0.5" Display: Height x width: 1.5" x 1"



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Size Guide Visual