Attention! Please select your keyboard accurately! 11 inch English/German keyboard compatible models: IPad Pro 11 2022 4th Edition A2435 A2761 A2762 IPad Pro 11 2021 Third Edition A2301 A2459 A2460 IPad Pro 11 2020 2nd edition A2228 A2231 A2068 A2230 IPad Pro 11 2018 1st Edition A1979 A1980 A2013 A1934 IPad October 10, 2022 A2757 A2777 IPad Air 10.9 2020 4th edition A2324 A2072 A2316 IPad Air 10.9 2022 5th Edition A2589 A2591 12.9-inch English keyboard compatible models: IPad Pro 12.9 2022 6th Edition A2764 A2437 A2766 IPad Pro 12.9 2021 5th Edition A2379 A2461 A2462 IPad Pro 12.9 2020 4th edition A2229 A2069 A2232 A2233 IPad Pro 12.9 2018 Third Edition A1876 A2014 A1895 A1983 Ⅱ. Product Details: 1. Bluetooth Stand: 5.1 version 2. Size: 25.1*19.4 cm / 23*27.9 cm 3. Thickness: Closure 1.6 cm 4. Height: Unfold 19 cm / 22.9 cm 5. Battery: Lithium battery 500mAh 6. Stand-by time: 90 days 7. Working Time: 5 hours (with backlit on),80 hours (with backlit off) 8. Working Voltage: 3.3 - 4.2V 9. Charging current: 10. Effective distance: 10 meters 11. Auto Sleeping: No action in 10 minutes 12. Backlit Light: White 13. Charge Port: Type-c 14. Material: PU Leather 15. Color: Black, White 16. Indicator LCD: Bluetooth sign: Click right Option and B at the same time to open Bluetooth, it will flashe in wireless pairing status Capital sign: Always on when capital, off when lowercase. Power indicator: Power display and slowly flash when charging. LCD Sleeping: Without action in 10 seconds without action. 17. Charging times: 3 hours Product features: 1. Wireless connection without password, more convenient operation 2. Ultra slim design concept, easy to carry 3. With energy saving sleep mode 4. With touch pad function operation is more convenient 5. Power indicator function