Bluetooth 5.1 - The Bluetooth adapter uses the latest Bluetooth 5.1+ EDR technology and is backward compatible with Bluetooth V5.0/4.0/3.0/2.1/2.0. It turns non-Bluetooth PC or laptop into Bluetooth-capable, enjoy the wireless connection for your office daily More Stable & Anti-Interference - The Bluetooth USB adapter applies the latest Bluetooth 5.1 chipset greatly reduces the power consumption of Bluetooth(BLE). Enhance anti-interference ability and stability, and decrease the transmission efficiency loss caused by the interference of the 2.4 GHz frequency band and low the possibility of signal interruption Long Range Bluetooth Adapter-The Bluetooth dongle uses Class 1 radio technology, equipped with extra long antenna, and the transmission range in open areas can reach 328ft/100m, ten times more powerful than Bluetooth 5.0 version. Enjoy the joy of wireless at home without having to be around the computer, free from the limits of distance. Widely Applications - Turn you