Bluetooth V3.0, + EDR, Class 2. Bluetooth Profiles: A2DP & AVRCP. Bluetooth distance: up to 10 meters(33") . * 3.5mm stereo audio output, LED indicator, One touch connect button. Power supply: Inner Li-Battery charging via Micro USB cable. * 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. * Operation time: up to 8 hours(built-in battery) music playback or continuous with Micro-USB charger. * Size: 50 x 25.5 x 11cm. Package Included: 1x Car Bluetooth Stereo Audio Music MP3 Receiver White, 1x 3.5mm Audio Cable, 1x 3.5mm Audio Adapter, 1x USB Cable, 1x User Manual.