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 11/10/8.1/7