Features: Wireless Bluetooth Car Kit: Connect your car AUX Jack， connect the wireless transmission of music and answer calls with your phone Wireless Bluetooth Audio Receiver: connected home speakers， and the phone is connected to a wired speakers into wireless Bluetooth speakers， you can answer the call Supports iPad， iPhone，smart phones and other Bluetooth devices; support for hands-free calls & music appreciation. Specifications: 1 Bluetooth version: 4.0 + EDR. 2 Transmission distance: 10 meters 3 built-in microphone 4 built-in lithium polymer battery 5 Talk time: 6 hours 6 Music Time: 6 hours 7 Answer the call How to use: 1. Plug the device into car audio equipment or other audio equipment 2. Press the Bluetooth button for 3 seconds to boot， until the Blue light flashes Locate the Bluetooth devices on your phone or tablet PC， select Pair3. answer the phone: When there is telephone access， press the Bluetooth button to answer 4. refused Tel: Short press the Bluetooth button 2 seconds reject calls 5. consecutive short press the Bluetooth button to redial the last call number