A11BS Ultra-thin ABS Detachable Bluetooth Keyboard Tablet Case with Backlight & Pen Slot & Holder for iPad Pro 11 inch 2021 (Dark Blue)

1. Standard 3.0 Bluetooth solution 2. Effective distance 10m 3. Standby time: 100 days 4. Continuous working time: 70 hours 5. Charging time: 4-5 hours 6. Lithium battery capacity: 200mAh 7. Lithium battery life: 3 years 8. Button life: 500 million times 9. Color: black, gold, dark blue, rose gold 10. Product size: 25.5 x 20.3 x 2.1cm 11. Weight: 597g