Plug and play, effective distance control range within 10 , high-definition is not stuck The Bluetooth stereo audio wireless transmitter device can be used with digital devices with Bluetooth devices (such as Bluetooth speakers or Bluetooth headsets, etc.) to achieve indoor wireless high-definition audio transmission. The Bluetooth transmitter/receiver can be used in all digital products with audio output (3.5MM audio interface), just need to link the audio to the input port. Including computers, televisions and all other products that do not have their own Bluetooth transmitter function. With Bluetooth headsets or Bluetooth speakers, you can enjoy music and TV programs without affecting others and ensuring privacy. colour: black Material: ABS size: 65x26x11mm Package Contents: 1 x Bluetooth transmitter 1 x 3.5 audio cable 1 x 3.5 pair TV AV cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.