Bryton Smart Speed and Cadence Sensor Pack The Bryton Smart Speed and Cadence Sensor combo delivers comprehensive wireless performance data directly to GPS head units and smartphones via dual ANT+ and Bluetooth connectivity. Revolutionary magnetless design eliminates complicated alignment procedures, making installation on wheels and cranks of any size remarkably straightforward. Additional mounting holes accommodate cable ties for rock-solid attachment across all configurations, ensuring universal compatibility whether you're equipping road bikes, gravel rigs, or mountain bikes. Impressive battery performance provides up to 300 days on standby and 270 hours of active use from replaceable CR2032 coin batteries in each sensor. This reliable sensor pairing provides complete speed and cadence data without the installation headaches or maintenance demands of traditional magnet-based systems. Technical: Magnet-less cycling cadence/speed sensors with dual ANT+/BLE technology Additional holes are designed for cable ties for maximum compatibility of all wheel /crank sizes Replaceable CR2032 coin battery