A11BS 2020 Ultra-thin ABS Detachable Bluetooth Keyboard Tablet Case for iPad Pro 11 2022 / 2021 / Air4 / Air5, with Backlight & Pen Slot & Holder, For iPad Pro 11 inch (2020)

1. Standard 3.0 Bluetooth solution
2. Effective distance 10 meters
3. Standby time: 100 days
4. Continuous working time: 70 hours
5. Charging time: 4-5 hours
6. Lithium battery capacity: 200mha
7. Lithium battery life: 3 years
8. Key life: 500 million times