H-109CS Touch Backlight Bluetooth Keyboard Leather Case with Rear Three-fold Holder For iPad Pro 11 inch 2021 & 2020 & 2018 / Air 2020 10.9(Black)

Features:1. Not only a protective case, built-in Bluetooth keyboard, more powerful2. The keyboard and leather case can be separated design3. Bluetooth chip, fast speed, low power consumption, stable4. Precise cutting, easy access to all buttons and ports, providing you with smooth operation5. Tri-fold stand, pen slot and touch function, easy to use6. Backlight function, add game atmosphere7. Easy to insert and remove8. Tablets and stylus are not includedSpecifications:1. Bluetooth version: 3.02. Effective operating distance: 10 meters3. Modulation method: GFSK4. Working voltage: 3.0-4.2V5. Working current: less than 2.5mA6. Standby current: less than 0.3mA7. Sleep current: less than 40 microampere8. Charging current: more than 200mA9. Standby time: more than 100 days10. Charging time: 3-4 hours11. Lithium battery capacity: 200mAh12. Sustainable working hours: 100 hours13. Lithium battery life: 3 years14. Button force: 80+/-10g15. Button life: 5 million clicks16. Working temperature: -10-55 degrees Celsius