Properties: 2 in 1 Bluetooth Transmitter and Receiver, B6 as Bluetooth Audio Transmitter is specially designed for Audio Devices (MP3, MP4, TV and PC etc) without Bluetooth function. You can connect the Bluetooth Transmitter to non-Bluetooth audio devices via the included 3.5mm Audio Plug, convert these audio devices to Bluetooth-enabled audio devices and make them work with Bluetooth-enabled Headphones and Speakers; As a Bluetooth Audio Receiver, B6 is specially designed for Car Stereo systems and Home Audio System. It can replace traditional Car Stereo systems and Home Audio System to Bluetooth-enabled ones and compatible with Bluetooth-enabled Smartphones, laptop, tablet, etc. It is easy to pair with. With this product, from your phone, laptop, tablet without the hassle of cables. Specification: Model Number: BT-6 Bluetooth: V5.0 Battery: Built-in Rechargeable Li-polymer battery Working Time: 30-38 Hours Audio Port: 3.5mm black color Main Product Size: 7*4.6*1.3cm/2.75*1.82*0.47in The package includes: 1 X Bluetooth Transmitter and Receiver 1 X Audio Cable 1 X USB Cable 1 X User Manual