The SENA SF1 Motorcycle Bluetooth Communication System has been built for directly communicating with your passenger.13 hours Talk Time with Bluetooth 4.1Headset Profile (HSP) and Hands-Free Profile (HFP)Advanced Audio Distribution Profile (A2DP)Audio Video Remote Control Profile (AVRCP)Advanced Noise Control Built-in SBC Codec and wide volume controlSample rate: max. 48 kHz (DAC)Up to 100m in open terrain Intercom working distance1.5hr Battery charging time: 1.5 hours30 minutes of charging equals 4 hours intercomLithium Polymer BatteryCertificates - Electronics: CE, FCC, ICThe SENA SF1 Motorcycle Bluetooth Communication System provides 2-way intercom communication up to 100 m (110 yards) in open terrain. The SF1 lets you pair to your device so you can stream music, take and make phone calls, and hear turn-by-turn GPS directions. The SF1 also allows VOX Phone commands and includes capabilities such as Audio Overlay , Quick Charging and microphone mute options.You can link the SF1 Bluet