This device allows you to listen to the music on your phone wirelessly through Bluetooth. Just match it once. In your car, you can listen to the music on your phone from the sound system. The device is charged and is also fed by taking electricity from USB. Compatible with all phones with Bluetooth. The device can convert old cassette player music sets into wireless sound systems. Bluetooth v4. 1 + EDR music receiver varies up to 10m / 33ft. iPhone, Android phone, Bluetooth A2DP function supports other smartphones. You can free hands via the Bluetooth receiver and connect a phone. Sleep mode is available for power saving. 3. 5mm stereo sound output. The home stereo / speaker is compatible with headphones in vehicle music sets. Features: Blutooth Standard: Blutooth v4. 1 + EDRİLE DISTANCE: 10m/80meller-Service Sound Profile: A2DPFrection: 2. 4GHzSertificated BQB, CE and FCC3. 5mm stereo sound output extension mode of USB charging input time: You can charge it with a USB charging input for up to 4 hours.