CYCPLUS Bluetooth Bike Speed Sensor & Cadence Sensor ANT+ Magnetless Waterproof Microminiature

Speed & Cadence Sensor BLUETOOTH & ANT+ MULTI-PROTOCOL: Supports all kinds of equipments and applications which collect speed or cadence data via Bluetooth or ANT+ ULTRA SMALL DESIGN & LONG ENDURANCE: SIZE only 38mm×29.5mm×9.5mm & WEIGHT only 9.2g. Not affect bike appearance and increase cycling burden.300 hours using time & 300 days standby time. It will enter the SLEEP MODE when not in motion DUAL-MODE SENSOR: Quickly switch between cadence and speed sensor modes by toggling switch to different position EASY INSTALLATION: Easily attach to your bike with included ELASTIC and DOUBLE-SIDED TAPE, no magnet or calibration needed. Excelsior quality and innovative design help you ride scientifically and healthily. Mounts to any bike's wheel hub, these sensors are easy to install, maintain and move between bikes.