The SENA SMH10D-10 Dual Motorcycle Bluetooth Headset and Intercom was designed to keep you connected to your riding companions over longer ranges for conversation and music sharing up to 900 meters (980 yards).Bluetooth 3.0 with Headset Profile (HSP) and Hands-Free Profile (HFP)Advanced Audio Distribution Profile (A2DP)Audio Video Remote Control Profile (AVRCP)Working distance: up to 900 meters (980 yards) in open terrainAdvanced Noise Control with Wind noise reductionBuilt-in SBC CodecWide volume controlAuxiliary audio-in connection via 3.5 mm jackCharging time: 2.5 hoursLithium polymer Battery12 hours talk time, 10 days stand-by-timeCE, FCC and IC certificationThe SENA SMH10D-10 Dual Motorcycle Bluetooth Headset and Intercom features Bluetooth 3.0 technology which provides the capability to listen to and share music, make phone calls with speed dialling, and participate in a four-way intercom conversation with riding buddies up to 900 meters (980 yards) away from each other.The syste