1. Chip: BR8651 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 XP, Windows 7, Windows 8, Windows 8.1, Windows 10 (Windows 8 or above system without driver) 8. Product size: 17 x 7.2 x 22mm
