The SENA SMH5 Bluetooth Headset & Intercom With Uni Mic Kit has been designed specifically for motorcycles to provide two-way intercom functionality that keeps you connected to your riding companion for conversations and music sharing through the crystal-clear sound from the Bluetooth stereo headset.Talk time of 7 hours, stand-by time of 7 daysHeadset Profile (HSP) and Hands-Free Profile (HFP)Advanced Audio Distribution Profile (A2DP)Audio Video Remote Control Profile (AVRCP)Bluetooth 3.0 communication systemUp to 400 meters (430 yards) of intercom in open terrainAdvanced Noise Control and Wind noise reductionBuilt-in SBC CodecWide volume controlLithium polymer Battery with 2.5 hour talk timeCE, FCC and IC certificationThe SENA SMH5 Bluetooth Headset & Intercom With Uni Mic Kit has been designed for easy operation - the Jog Dial and large button on the SMH5 make for an intuitive user interface that s easy to control while riding. Pushing the button lets you cycle through all device fun