Features: 1. Detachable Bluetooth keyboard cover, keyboard card slot and protective cover have strong adsorption, keyboard and protective cover can be freely combined. 2. Flip cover design makes it easier to work. 3. The keyboard supports a variety of device connections, such as: mobile phones. 4. The protective case can be placed back and forth to view the video from a variety of angles. The protective sleeve can be used separately. 5. Bring the iPad sleep function and close/open automatic sleep/wake. 6. Colorful backlight, soft light and not glare. The 3rd brightness can be adjusted. 7. Bluetooth 4.0 chip, fast response without delay, smart Bluetooth connection pairing, no password, more power saving. 8. The bottom non-slip mat design, all-round protection. Parameter: 1. Bluetooth standard: 4.0. 2. Effective distance: 10 meters. 3. Standby time: 100 days. 4. Continuous working hours: 70 hours. 5. Charging time: 4-5 hours. 6. Lithium battery capacity: 500mAh. 7. Lithium battery life: 3 years. 8. Key life: 500 million times. 9. Aluminum alloy base plate, 7 color backlight, separable. 10. Product size: 24. 3x18x2cm. 11. Single bare weight: 586g. 12. Single keyboard part weight: 418 grams. 13. Single shell part weight: 168 grams.