A102B-A Lambskin Texture Square Keycap Bluetooth Keyboard Leather Case with Touch Control For iPad Pro 10.5 inch 10.2 2021 & 2020 & 2019 Air 3(Black) Features: 1. Not only a protective case, built-in Bluetooth keyboard, more powerful 2. The keyboard and leather case can be separated design 3. Bluetooth chip, fast speed, low power consumption, stable 4. Precise cutting, easy access to all buttons and ports, providing you with smooth operation 5. Stand, pen tray and touch function, easy to use 6. Round keycaps 7. Easy to insert and remove 8. Tablets are not included Specification: 1. Bluetooth version: 3.0 2. Effective distance: 10m 3. Modulation method: GFSK 4. Working voltage: 3.0-4.2V 5. Working current: less than 2.5mA 6. Standby current: less than 0.3mA 7. Sleep current: less than 40uA 8. Charging current: more than 200mA 9. Standby time: more than 100 days 10. Charging time: 3-4 hours 11. Lithium battery capacity: 200mAh 12. Sustainable working hours: 100 hours 13. Lithium battery life: 3 years 14. Button force: 80+-10g 15. Button life: 5 million clicks 16. Working temperature: -10-55 degrees Celsius Notice: 1. IOS system 13.4 and above can use the mouse (mouse is not included) 2. Under the IOS system, the touchpad function only supports tablet computers with IOS 13 and above 3. The touch function is not applicable to iPad Air, other models need to be upgraded to IOS 13 or higher to use the touchpad function 4. Android and Microsoft systems do not need to be upgraded and can be used directly 5. The actual product is subject to the title model, the picture model is for reference only