SOMESUN Bicycle Speed Cadence Sensor Bluetooth Smart Wireless ANT Cycling Bike

I have four of these. Two are fitted to road bikes, one to a "fixie" and one on a tandem. On the fixie, Strava shows the cadence chart as closely matching speed as one would expect so no problems there. If you lose connection intermittently during a ride when there has been no previous problem change the battery. Two of mine started doing this, and within a week the battery was completely dead. Spare batteries and tie wraps are supplied (you have to cut the tie when changing a battery). The need to use a new tie every time you change a battery would be my only gripe.

After about 5 hours of being completely soaking wet it stopped reporting correctly.It does work great in the dry, and the data is really useful. It worked for a number of hours in the wet, but eventually it couldn't cope any more, and I had to remove it.3 stars is a fair rating

Absolute garbage, save your money and buy something that costs a bit more cos this thing doesn't even work and you'll have to buy the more expensive one anyway. Also it takes ages to arrive from China.

Doesn’t appear on Bluetooth. I might as well tried to use a hedgehog to track my cadence !!!

Really pleased with this. A hell of a lot cheaper than Garmin and does the job perfectly. Arrived quicker than expected too.

Really greet sensor. I have a Garmin 920 and work properly with ant+.