Sena SMH5D-01 Low-Profile Motorcycle and Scooter Bluetooth Headset / Intercom (Dual) Two-way intercom keeps you connected to your riding companion for conversations and music sharing Jog Dial and large button make for an intuitive user interface that's easy to control while riding Bluetooth 3.0 technology lets you make hands-free calls and participate in a one-to-one intercom conversation with a riding buddy up to 400 meters (430 yards) away Headset and included boom microphone feature Advanced Noise Control technology to cut down on background noise for both incoming and outgoing audio Eight hours of battery life and Universal Intercom protocol for cross-brand intercom compatibility