Feature: 1. BLUETOOTH 5.0: Bluetooth USB adapter with stable bluetooth 5.0, bluetooth low energy consumption, improves anti interference ability, provides stable bluetooth connection. 2. WIDELY APPLICABLE: Faster and farther working distance than Bluetooth 4.0, supports connecting Bluetooth speaker, Bluetooth headset, Bluetooth keyboard, Bluetooth mouse BT devices to PC, laptop, TV, projector. 3. BLUETOOTH CALLING FUNCTION: This bluetooth USB adapter supports calling function, the calling function allows you to make calls while using a bluetooth headset connected to your computer. 4. WIDE COMPATIBILITY, PLUG AND PLAY: Bluetooth 5.0, backward compatible with Bluetooth 2.0 2.1 3.0 4.0 4.2, compatible with USB 2.0, USB 1.1. support plug and play, no need to install drivers, easier to use. 5. MINI AND COMPACT SIZE: The very compact USB adapter allows you to put it on your laptop or PC without removing it, won't block the USB ports around it, space saving. Specification: Item Type: USB Bluetooth Adapter Material: ABS Interface: USB. Package List: 1 x USB Bluetooth Adapter1 x Instruction Manual