1.Connect to this Bluetooth receiver via a 3.5mm audio cable/adapter, then pair your phone for easy listening/navigation or answering calls 2.Easy to Use: You can play/pause/skip music/answer a call/redial the last called number or control the music on the receiver. Built-in rechargeable battery, providing up to 8 hours of playback and talk time, charging can be completed in about 1.5 hours. 3. Bluetooth enable your old school wired speakers, headphones, enjoy streaming music and get rid of long boring car trip. 4. Unbelievable Features: This mini Bluetooth receiver can connect two Bluetooth devices at the same time. Built-in microphone for hands-free calling while driving. Designed with independent volume +/- buttons for perfect control of voice up/down and play/pause. 2-in-1 Bluetooth Assist Adapter Support > 8 hours of continuous wireless audio playback time, automatically re-pairing with the last paired device