The Bryton Smart Heart Rate Monitor applies both ANT+ and Bluetooth technology. It wirelessly transmits your heart rate to cycling computers and smartphones. Dual Support Featuring the application of dual technology, ANT+ and Bluetooth, Smart Cadence Sensor is able to connect to both cycling computers and smartphones. It is compatible with most devices on the market. Improve Yourself Accurately measure your heartbeat and captures results to your device for instant feedback or later analysis on Strava, TrainingPeaks and other training sites Bryton’s Smart Heart Rate Monitor (HRM) is a pro heart rate monitor that works with multiple devices, including all Bryton computers, with Bluetooth 4.0 and ANT+ wireless technology. The heart rate monitor comes with a magnet-free design and is installed on a soft, elastic chest strap that is adjustable and provides a comfortable, adaptable fit. The replaceable battery provides up to 24 months of battery life based on 1 hour of use per day.