The Bluetooth mitter makes everything Bluetooth-enabled, lets you enjoy the fun of wireless, and can be paired with Bluetooth receivers (such as 2 headsets) simultaneously.<br> Turn on the switch, the A / B blue light flashes, after the connection is successful, the blue light is always on, and the working status can be seen at a glance.<br> This Bluetooth audio adapter makes your TVs and other Bluetooth-enabled devices stream audio to your Bluetooth headphones.<br> Low latency for clear fidelity stereo sound, lag-free content streaming in streamer mode, giving you a richer and deeper sound experience. Plug and play.<br> With a built-in 300mAh rechargeable battery, it only takes 1-2 hours to fully charge and runs for 6 hours.<br> Name: Bluetooth adapter<br> Bluetooth version: Bluetooth V5.0<br> Working frequency 2.402G -2.480G<br> Charging voltage: DC 5V<br> Bluetooth protocol: 5.0 EDR, A2DP, HSP, AVRCP<br> Bluetooth compatible distance: 10m (open area)<br> Output connection mode: AUX 3.5mm<br> Material:plastic<br> colour:black<br> Package Contents:<br> 1 * Bluetooth Audio mitter<br> 1 * 3.5mm Aux Cable<br> 1 * USB Charging Cable<br> Only the above package content, other products are not included.<br> Note: Light shooting 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.