109 Three-mode Wireless Bluetooth Keyboard 1. Charging voltage: 3.7V 2. Button life: more than 3 million times 3. Standby time: about 1000 hours 4. Charging time: about 3 hours 5. Effective connection distance: 10 meters 6. Battery capacity: keyboard 350mah 7. Sleep time: 30 minutes 8. Continuous working hours: 200 hours 9. Support mainstream operating systems such as Windows, Mac, IOS, Android, etc. 10. The intimate noise reduction button design creates a comfortable environment without affecting the rest of the roommates and family 12. Keyboard size: about 37x12.5x0.6cm 13. Three modes: wireless 2.4G, dual Bluetooth 3.0+5.0 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.