Features 1. DUAL MODE: Latest Bluetooth 5.3 and EDR adapter, supports dual mode (BR/EDR and low energy controller). Fast response and improved anti-interference performance, eliminating delays and lag. Enjoy a wireless desktop with flexible and easy operation. 2. FAST AND STABLE: Bluetooth 5.3 enhances connection stability and reduces signal interruption. In open space, the maximum transmission rate reaches up to 3 Mbps with a transmission distance of up to 20 meters. 3. HD SOUND QUALITY: Supports SBC high-definition audio decoding technology, 44.1 kHz high sampling rate, CD-grade HiFi stereo sound quality, delivering clear and crisp audio for an immersive music experience. 4. BLUETOOTH 5.3: High-performance Bluetooth 5.3 chip supports Bluetooth dual mode, 3 Mbps high bandwidth, higher transmission speed, lower latency, and low-loss data transmission for rapid response and stronger interference resistance, eliminating audio dropouts and lag. 5. WIDE COMPATIBILITY: Compatible with Windows 8.1, 10, and 11. Supports Bluetooth speakers, headphones, keyboards, mice, Bluetooth printers, and stereo headsets. (Not compatible with XP, Win7, Win8, or OS X systems). Specification Item Type: USB Bluetooth 5.3 Adapter Material: ABS Bluetooth Chip: ATS2851 Bluetooth Version: V5.3, compatible with 5.2/4.2/4.2 LE/4.0/2.1+EDR Frequency Range: 2.4–2.4835 GHz Transmission Distance: 20 m / 21.9 yd Transmission Rate: 3 Mbps Supported Protocols: A2DP, HSP, AVRCP, HID, PAN, GAVDP, DID, IOPT Sound Decoding: AptX Adaptive, AptX HD, AptX LL, AptX, SBC Input Interface: USB (driver-free), AUX audio Supported Systems: Windows 8.1, 10, 11 Package List 1 x Bluetooth Adapter 1 x Instruction Manual