Bluetooth 5.3: Built -in high -performance Bluetooth 5.3 chip, and EDR+BLE technology, high -definition decoding, Bluetooth wireless signal is stable, allowing for automatic connection to Bluetooth Convenient to use: free drive, plug and play, support 5 devices to connect to use simultaneously Bluetooth Pairing Faster: Memory pairing, booting seconds Wide Application: Enables wireless communication with Bluetooth-enabled desktop, printers, phones and headsets. Utilizes Bluetooth low energy technology for energy-saving wireless connectivity Easy to Carry: A sleek, ultra-small design means you can insert the USB Bluetooth adapter into any USB port and simply keep it there regardless of whether you are traveling or at home Specification: Material: PC+ABS Product chip: ATS2851 Bluetooth version: 5.3 Frequency range: 2.4GHz ~ 2.4835GHz Wireless protocol: A2DP/SBC/AAC/HSP/AVRCP/HID, etc. Fixedware version: HCI 12.2064 / LMP 12.8978 Transmission distance: 10m Transmission rate: 2Mbps Applicable operating system: Windows 8/10/11 (Windows 7 needs to install driver, does not support for Apple computer) Number of support device: 5 Size: 17*9.3*30mm Net weight: 10g Features: Bluetooth 5.3 chip, EDR+BLE technology, high-definition decoding, driver-free, plug and play, stable signal, supporting 5 devices at the same time, auto connect after device power on