X4 Universal Round Keys Panel Spray Color Bluetooth Keyboard(Black)

1. Working voltage: 3.7V
2. Product weight: 200g
3. Product size: 24.7x14.9x1cm
4. Charging voltage: 5V
5. Current: 500mA
6. Number of keys: 78 keys
7. Operating distance: 10 meters wireless connection
8. Interface: Bluetooth
9. Mute effect: good
10. Button life: 5 million times
11. Lithium battery battery life: 3 years
12. Duration: 100 hours