YT11B-A 2021 Detachable Candy Color Skin Texture Round Keycap Bluetooth Keyboard Leather Tablet Case with Touch Control & Pen Slot & Stand For iPad Pro 11 2021 Air4 Air5 Pro 11(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 keycap, shell material is TPU 7. Easy to insert and remove 8. Tablets are not included Specification: 1. Bluetooth version: 3.0 2. Effective distance: 10m 3. Continuous working time: 70 hours 4. Standby time: 100 days 5. Charging time: 4-5 hours 6. Lithium battery capacity: 200mAh 7. Lithium battery life: 3 years 8. Button life: 5 million clicks Note: 1. IOS system 13.4 and above can use the mouse (mouse is not included) 2. The touchpad function is under IOS system, only supports tablet computers with IOS 13 or higher system 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 model of the picture is for reference only