1 Updated Version:You can connect to your smartphone to enjoy wireless high-quality stereo music and hands-free calling Intelligent noise reduction Pen-clip design, Easy to carry, easy to answer calls during fitness or exercise, Enjoy wireless happiness^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 Connect to this Bluetooth receiver via a 3 5mm audio cable/adapter, then pair your phone for easy listening/navigation or answering calls^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^5 Perfect Compatibility: The Bluetooth Stereo Audio Receiver Adapter is suitable for most Bluetooth devices such as mobile phones, Pod, Pad, Samsung, LG, Huawei, HTC and other Android smartphones Simply plug in a 3 5mm auxiliary audio jack device, such as speakers, headphones, car, home stereo, and let your device instantly have wireless Bluetooth and provide high-fidelity stereo for wireless enjoyment