Play and plug, quick and convenient, two-in-one USB BT adapter, receive and transmit dual signal. Driver free, BT connection, one-key switch, quicker and stable transmission, 15 meter long distance transmission, wide coverage area, delicate and practical. Features:Plug and play, quick and convenient to use.5.0 BT connection, high compatibility, transfer stable and quick.USB port, applicable for multiple laptop, phone and automobile.Free drive, auto matching, receive and transmit two-in-one.Red light and blue light display different work characteristic.10 meter transmission, wide coverage range, the signal is clear and does not twinkle.One key pick up and hang up  communicate, can connect with headphones and stereo.Play and plug, quick and convenient, two-in-one USB BT adapter, receive and transmit dual signal. Driver free, BT connection, one-key switch, quicker and stable transmission, 10 meter long distance transmission, wide coverage area, delicate and practical. Features:Plug and play, quick and convenient to use.5.0 BT connection, high compatibility, transfer stable and quick.USB port, applicable for multiple laptop, phone and automobile.Free drive, auto matching, receive and transmit two-in-one.Red light and blue light display different work characteristic.10 meter transmission, wide coverage range, the signal is clear and does not twinkle.One key pick up and hang up  communicate, can connect with headphones and stereo.