The SENA Wristband Remote works with Bluetooth Smart Ready-enabled gear, which is part of the Bluetooth 4.1 standard.Operating time of three monthsWater resistantBluetooth 4.1 enabledWorking distance of up to 10m2 hours of charging timeLithium Polymer BatteryCE, FCC and IC certificationThe SENA Wristband Remote allows you to fully control your SENA communication system without the need of removing your hand and trying to operate the unit at the side of your helmet, resulting in less time with your hands off the bars.The remote is able to offer 3 months of operating time from a total of 2 hours charge, resulting in long periods of use with very little down time to charge the remote. There is also a working distance of up to 10m, allowing you to control the headset even if you do not currently have the helmet on.Compatible Models - Momentum Lite, Momentum, Momentum Pro, Momentum INC, Momentum INC Pro, Cavalry, Savage, X1, X1 Pro, R1, R1 Pro, 30K, 20S EVO, 20S, 10U, 10Upad for HJC IS-17,