1. Bluetooth version: 5.1 2. Frequency range: 2.4GHz (2402-2480MHz) 3. Transmission distance: 0-100M 4. Rated voltage: DC 5V 5. Interface type: USB 6. Chip: 8761 7. EDR data transmission rate, data transmission rate can reach 3Mbps, effective distance can reach 10~100 meters 8. Listen to music wirelessly, stable and without lag, connect the computer to Bluetooth speakersheadphonesheadset devices, and enjoy CD stereo-like sound quality 9. The antenna can be rotated freely, 90 degrees vertically and 180 degrees linearly. 10. Bluetooth 5.1 chip, achieving faster transmission speed, more device connections, and more stable transmission conditions 11. External antenna, real stable transmission distance of 100 meters in open space 12. Easily transfer mobile phone datafile sharing, support Bluetooth headsetaudio and other device connection, wireless Bluetooth connection between computer and fax machine or printer, PC or notebook can easily implement wireless Bluetooth function 13. Operating system: Win7 (requires driver installation), Win8.1, Win10, Win11 (Win8 and above systems are driver-free) 14. External 2dBi high-gain antenna, better performance, stronger transmission signal, longer distance 15. Size: 206x22x11mm (antenna straight); 15368x11mm (antenna 90 degrees)