This is the most advanced cycle computer stocked by Decathlon in Australia. It works fine, however it has very limited functionality compared to similar products that cost a bit more elsewhere. It was easy to install, but it doesn't tell you the length of your ride, and it doesn't provide an average speed except after you've stopped.

Compact efficient and reliable

I have used this now on about 6 rides and have found it very difficult to get consistently working. It may work one ride, then when I go out to ride again I need to spend 15 minutes getting the unit to show any data. Would recommend against purchasing

Constantly having the change the batteries, also found it difficult to mount the sensor on my suspension forks.

Just purchased a new bike from Decathlon and decided to by this. Big mistake!
On my other bike I have a £2.99 Sunding (purchased from Home Bargains) attached (albeit wired) which comes with 7 functions one of which is a cycle routine so all functions can be seen with a glance. I wasn't too bothered about the 4 functions because they were the ones I use mostly. What I didn't realise ids that whilst on the road the trip distance and average speed are not availiable whilst on the road. You actually have to stop to read them so it makes two of the functions a little pointless.
The other problem is how the units are fitted to the bike which is with a glorified rubber band which makes it unstable on rough surfaces not to mention that if the rubber band breaks they would drop off onto the road. If you insist on buying one of these I'd add some other fixing alternatives such as tape or cable ties. My conclusion is that as a 'Cycle Computer' it's hardly fit for purpose and I shall be taking it back to request a refund.