The Motorola Stereo Bluetooth Headphones HT820 wirelessly connects to a Bluetooth wireless phone and a separate music source simultaneously - when linked to a Bluetooth A2DP enabled device or just about any audio device using the Motorola Bluetooth Stereo Gateway - promising that users can enjoy favorite songs without missing a call. Music automatically mutes when a call comes in and when the call ends, the music resumes play. The intuitive headphones feature controls for both the music source and mobile phone - making it easy to play, pause or stop a favorite song, as well as receive, answer or end calls with the touch of a button. The lightweight, ergonomic Motorola HT820 provides premium communication and music connectivity with minimized background noise and reliable battery power. When using the 3.5mm to 2.5mm headset jack accessory cable (included), the headset is compatible with other non-Bluetooth devices for universal music enjoyment.