XOSS Vortex Cadence and Speed Sensor Wireless IPX7 Waterproof - 300 Hours Dual Modes Bike Sensor ANT+/Bluetooth 4.0 Compatible for Cycling Computer - 2 Pack

I tested two sensors:Cadence was working fine - no issues.Speed - after two rides, the battery was dead... I replaced the battery and again after two rides, the battery was down below 40%. I wanted to replace this faulty speed sensor, but Seller informed me they can do it only within 15 days after purchase and now I need to contact the Manufacturer for a warranty. No contact details were provided:"For warranty purposes please contact the manufacturer.We are only sellers who ship products from the USA.Thank you for your cooperation!"

Very easy to install, great simple instructions, and if your just starting out on your cycle training and are not sure how much of the gear that's out there you need. Start with these!

I connected 2 sensors for cadence and speed, on my indoor cycle. They are both accurate and work well for now. The case, straps, rubers feel premium. I recommand!

Buen Producto, cumple lo que promete

Good sensor , gives accurate cadance and speed data which helps strava to estimate power data without a power meter.

These have been a god send to get into a habit of keeping up cadence and speed which forces good gearing. Bluetooth worked oob with very little issue during pairing. Certainly value for money. Installing the speed sensor inside the cycle tyre was tricky to do i somehow managed. App is also great and able to sync with strava