TOLEAD Portable Bluetooth 3.0 Audio Music Streaming Receiver Adapter with Hands Free Calling, Car Bluetooth Transmitter Streaming Adapter with 3.5mm Stereo Output (Black) Bluetooth V3.0, + EDR, Class 2. Bluetooth Profiles: A2DP & AVRCP With 3.5mm stereo audio output, LED indicator, One touch connect button. Power supply: Inner Li-Battery charging via Micro USB cable Operation time: up to 8 hours(built-in battery) music playback or continuous with Micro-USB charger Support headphones like: iPhone, Android phones, other smart phones which with Bluetooth A2DP functions. Stereo Audio Output: Use with home stereos, speakers, car stereos, headphones etc by 3.5mm stereo inlet socket