1. Chip: RTL8761B
2. Bluetooth version: 5.0
3. Frequency range: 2.4GHz
4. Transmission distance: 0-10 meters
5. Rated voltage: DC 5V
6. Interface type: USB
7. Operating system: Windows 7, Windows 8.1, Windows 10
8. Product size: 14 x 6 x 22mm