Latest Bluetooth 6.0 technology (BR+BLE+EDR) for higher stability and faster speed. Compatible with Bluetooth 2.1/3.0/4.0/5.0/5.1/5.3/5.4. Built-in antenna design with 2dBi for better signal and stable connection. Connect up to 7 devices simultaneously, including Bluetooth speakers, keyboards, headsets, and mice. High-fidelity audio with low energy consumption and minimal sound quality loss, supporting Dual mode (BR/EDR + Bluetooth Low Energy). The compact Bluetooth antenna with 2dBi, to get a better signal and keep a stable Bluetooth connection. It can provide more powerful. Plug & Play for Win11/10/8.1 (the latest Bluetooth 6.0 will be shown if you download the driver). Also supports Win7 (driver required for Win7). Color: Black Material: plastic Package Contents: 1*USB Bluetooth 6.0 Adapter Only the above package content, other products are not included. 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.