MEILAN C3 Bicycle Wireless Speed and Cadence Sensor, Bluetooth 4.0, For Bike computer and Apps, Waterproof,Can be Replace Battery

I use it with Wahoo fit on my iPhone se, which is now my cycle computerThis works fine for casual cycling like me.

I bought this sensor mainly to use for indoor trading on my bike. Easy to install but would recommend viewing on YouTube a installation video if unsure. Links with the Strava app if you are a keen athlete. I used Cyclemeter app for my indoor training which is also good for outdoor training too.

Manage to install it but it’s a bit tricky, specially the cadence magnetic part; only manage to secure it with a single tie.As per bluetooth compatibility, not all cycling app can recognise the sensor.

Came with a flat battery. Instructions say it operates within 2 cm of the magnet. I think they meant 2mm. The speed sensor only seems to work if you are pedalling so that the cadence sensor is working as well. Not the best product.

Pretty easy to install and bluetooth worked fine for me. I got it to replace a Top Action Computer Speedometer that was useless.Unfortunately the cadence seems to top out at around 60 - 63, so it's not like it doesn't detect it; the cadence ramps up nicely until it hits 60 and then stops, no matter how fast you pedal.This speed sensor works a lot better with zwift than the Top Action one, fortunately the Top Action cadence meter seems pretty accurate, so between the 2 systems I have on working one.

Tried to use this to track turbo training. Down loaded the app and it won't open. Can't get the device to be picked up on Bluetooth. Can't recommend it.