Interface: USB 2.0 Bluetooth Version: 5.0 Compatible with Bluetooth 4.1/4.2/5.0 devices Transmission Frequency: 2.403~2.480 GHZ Transmission rate: 3MBPS Transmission distance: 10-20M (Unobstructed) Supports: Windows 7/8/8.1/10 Please install the driver before use – once installed the blue light will turn on to show the device is working
