Specifications:2 in 1 bluetooth-compatible audio adapter with transmitter and receiver functions.Bluetooth 5.0V, signal transfer is faster, stable and in higher quality.USB interface for easy connection, plug and play, no drive installation need.Transmits audio from your TV, laptop or computer to a bluetooth-compatible device, such as headphone, speaker or headset that has bluetooth-compatible capabilities.Item Name: bluetooth-compatible Audio AdapterMaterial: ABSBluetooth Version: BT5.0Wireless Distance: 15 metersCharge Interface: USBVoltage: DC 5VAudio Input Interface: 3.5mmFeatures: Portable, Wireless, High Speed, Plug and PlayLength: 5.5cm/2.17" (Approx.)Width: 2.2cm/0.87" (Approx.)Thickness: 1.1cm/0.43" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Audio Adapter1 x USB Extension Cable1 x 3.5mm Audio Cable1 x RCA Audio Cable1 x User Manual