Bluetooth 5.0 Applies The Latest Bluetooth 5.0 Technology, Backward Compatible With Bluetooth V4.0/3.0/2.1/2.0/1.1, Wireless Connectivity Provides Stable And Convenient Communication Between Bluetooth Devices And Your Pc Or Laptop, Nano-Sized Ultra-Small For Convenient Portability With Reliable High Performance, Supported Operating System Windows 10/8.1/7