Sena SMH10-M01 Replacement Main Module with USB Power Cable for SMH10 Bluetooth Headset Long-range music sharing and intercom for motorcyclists--up to 900 meters (980 yards) Works with SMH10 Motorcycle Bluetooth Headset & Intercom (sold separately) Advanced Noise Control technology cuts down on background noise for both incoming and outgoing audio Includes USB power cable Up to 12 hours of talk time and 10 days of stand-by time on a single charge