Short description: Exact performance values: the HRM-Pro Plus reliably and accurately records your heart rate data as well as running efficiency values such as step frequency, vertical ratio, ground contact time, mileage and much more High wearing comfort: the comfortable premium chest strap fits up to a chest circumference of 106 cm (142 cm with optional extension). The battery cover allows for easy battery replacement and increases the longevity of the strap Also suitable for indoor running: the pulse belt also records pace and distance data when running indoors on the track as well as on the treadmill ANT+ AND BLUETOOTH LE: Thanks to ANT+ and Bluetooth Low Energy, the data can be transferred directly to the smartwatch, smartphone, training equipment or online platforms, such as Zwift SAVES WITHOUT SMARTWATCH: The HRM-Pro Plus stores your activity and then transfers it directly to your smartwatch. So you can easily leave your watch in your pocket during team training and still measure your performance Automatically detects your activities: the premium heart rate chest strap detects your activity, stores your data and synchronises your activity data with your Garmin Connect account thanks to Physio TrueUp Data when swimming: your heart rate data is recorded and transferred to your device even underwater 1 year battery life: the button cell battery in the HRM-Pro Plus lasts up to 1 year. You can easily replace the battery and start your training immediately