Feature:1. DUAL MODE: Latest Bluetooth 5.3 and EDR adapter, support dual mode (BR/EDR and low power controller). Quick response and better anti interference, say goodbye to delay and lag. Anti interference ability is improved. Enjoy a wireless desktop with flexible and easy operation.2. FAST AND STABLE: Bluetooth 5.3 improves the stability of the connection and reduces the possibility of signal interruption. In open space, in open space, the maximum transmission rate is up to 3Mbps and the transmission distance is up to 20 meters.3. HD SOUND QUALITY: support SBC high definition sound decoding technology, 44.1KHz high sampling rate, CD grade HiFi stereo sound quality, crystal clear sound quality, enjoy the music.4. BLUETOOTH 5.3: High performance Bluetooth 5.3 chip, support for Bluetooth dual mode, 3Mbps high bandwidth, higher transmission rate, lower latency and low loss data transmission, rapid response, stronger anti interference, goodbye to intermittent, lagging problems.5. WIDE COMPATIBILITY: Support for Windows 8.1 10 11, support Bluetooth speakers, headphones, keyboards, mice, Bluetooth printers and stereo headphones. (Does not support for XP, for Win7 8, for OS X system use).Specification:Item Type: USB Bluetooth 5.3 AdapterMaterial: ABSBluetooth Chip: for ATS2851Bluetooth Version: V5.3 Compatible with 5.2/4.2/4.2 LE/4.0/2.1+EDRFrequency Range: 2.4G2.4835GHzTransmission Distance: 20m/21.9ydTransmission Rate: 3MbpsSupported Protocols: A2DP, HSP, AVRCP, HID, PAN, GAVDP, DID, IOPTSound Decoding: AptX Adaptive, AptX HD, AptX LL, AptX, SBCInput Interface: USB (Drive Free), AUX SoundSupported Systems: for Windows 8.1 10 11.Package List:1 x Bluetooth Adapter1 x Instruction Manual