[Bluetooth 5.0 technology] Bluetooth USB 5.0 adapter makes the computer have Bluetooth receiving function, compatible with Bluetooth 4.1/4.2/5.0 devices, easy to enjoy music, transfer files, entertainment during work. [Support multi-device connection] The USB Bluetooth adapter can simultaneously connect the computer with other Bluetooth-enabled devices, such as desktops, laptops, mice, keyboards, headsets, printers, etc. Not applicable to Mac OS, Linux, TV, car audio. [More stable and smoother] The Bluetooth USB adapter is equipped with the BR8041 Smart 5.0 Bluetooth chip, supports 3Mbps transfer rate, and provides higher speed file and audio transfer. Faster transmission than Bluetooth 4.0, lower power consumption, and more stable signal. [Plug and Play] For Win8 / Win10 system, directly plug the adapter into the computer's USB port to achieve Bluetooth connection (install the full version of the driver, the computer can be connected to the Bluetooth headset/stereo). Win7/XP needs to install the driver, you can use the CD to download the Bluetooth adapter driver. Name: Bluetooth 5.0 adapter Working frequency: 2.4MHz Transmission distance: 10-20 meters (no obstacle, no interference) Use range: Windows system computer colour:Black Material:ABS size:22 x 15MM Package Contents: 2 x Wireless network card 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.