The Bryton Smart Speed Sensor applies both ANT+ and Bluetooth technology. It wirelessly transmits your speed data to cycling computers and smart phones. With no magnets and exposed parts to line up, it is much easier to install.   Easy to Use Smart Cadence Sensor is so Magnet-less, and it is super easy to install, maintain and move between bikes.   Dual Support Featuring the application of dual technology, ANT+ and Bluetooth, Smart Cadence Sensor is able to connect to both cycling computers and smart phones. It is compatible with most devices in the market.   Improve Yourself Designed to help you monitor your outdoor and indoor training. Combine it and improve your personal best or compete with other cyclists.   Specification Wireless Technology: Bluetooth 4.0 & ANT+