FT-1039B Detachable Bluetooth 3.0 Aluminum Alloy Keyboard + Lambskin Texture Leather Tablet Case for iPad Pro 10.5 inch / iPad Air (2019), with Water Repellent / Three-gear Angle Adjustment / Magnetic / Sleep Function (Black)

1. Bluetooth version 3.0
2. Effective distance within 10 meters
3. Lithium battery capacity: 250mA
4. Charging time is 2-3 hours
5. 100 hours of sustainable working hours
6. Standby for 100 days
7. Working voltage: 3.0-4.2V
8. Working current: <2.5mA
9. Standby current: <0.3mA
10. Sleep current: <40uA
11. Charging current: >200mA
12. 5 million button click life