DUAL BAND TECHNOLOGY - ANT and Bluetooth Smart capabilities allow for a wireless connection to both smartphones and bike computers. WIRELESS CONNECTION - No tangled wires on your bike to connect the sensor to your device. MAGNETLESS - The RPM Cadence installs easily with no magnets required SLEEK, LIGHTWEIGHT DESIGN- weighs 7 grams with the mount included CADENCE MEASUREMENT -Provides accurate cadence data during your ride TWO BIKE MOUNT OPTIONS- (1) mount with double sided 3M tape, or (2) use the silicone sleeve and mount with zip ties. VISIBLE CONNECTION- Two LED lights show the sensor device connection (blue) and cadence detection (red) REPLACEABLE BATTERY- No charging required! Operates on a coin cell battery for up to 1 year UNIVERSAL FIT -RPM cadence sensor will fit with most bikes and frame sizes