Bluetooth 4.0 – Uses the latest Bluetooth 4.0 with low energy (BLE) technology and is backward compatible with Bluetooth V3.0/2.1/2.0/1.1 Driver Free – Plug and Play for Win 8, Win 8.1, and Win 10 Nano-Sized – Ultra-small for convenient portability with reliable high performance Supported Operating System – Supports Windows 11/10/8.1/8/7/XP