Features: 1. Easy to Use: Bluetooth-compatible version: 2.1. There is no need to install any software, plug and play.<br> 2. Wireless Bluetooth-compatible: The TV sound is mitted to the home combined speaker through Bluetooth-compatible, so there is no need to worry about the trouble caused by wiring.<br> 3. Enjoy the Music: By mitting TV sound to Bluetooth-compatible headset through Bluetooth-compatible, you can enjoy the shocking sound effect alone in the dead of night without worrying about disturbing others.<br> 4. Wide Usage: This Bluetooth-compatible mitter is not only suitable for home use, but also for classroom speeches and conference speeches.<br> 5. High Performance: Speak directly to the product's Mark air outlet, and you can mit the speech sound to the Bluetooth-compatible speaker. There is no need to worry that the voice is too small to be heard by others.<br> Specification:<br> Interface: USB<br> Wireless Type: bluetooth-compatible<br> WIFI Standard: None<br> Content: AUDIO<br> High Definition Support: None<br> Model Number: Audio mitter<br> Support paired Bluetooth-compatible stereo headset/headset to control play/pause, forward/backward<br> Support automatic pairing (no keys)<br> Support pairing pin code: 123400008888<br> Frequency range: 2.42 to 2.480 MHz (analog) spect<br> Working current: 40mA maximum<br> Compatible with 30PIN<br> Operating range: 10m<br> Material: plastic<br> colour: black<br> Package Contents:<br> 1 x Bluetooth Audio mitter<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.