M10 2 in 1 Removable Bluetooth Keyboard + Leather Tablet Case with Holder for Lenovo Tab M10 TB-X505X 1. Using stable performance chip 2. Built-in 150mA lithium battery, can be used continuously for 200 hours 3. Micro USB cable charging, charging for about 3 hours 4. Sleep function, if no operation is performed, the keyboard will automatically enter the power saving mode within 15 minutes 5. iOS, Android, and Windows are universal or single-system use 6. 59 button design, with 14 shortcut function keys 7. The buttons have been silk-printed with UV peritoneal treatment, which is durable and will not fade after 5 million rubs and knocks. 8. The surface of the keyboard adopts wire drawing process, which is very textured 9. Scissor button design, sensitive typing, fast response and good hand feeling 10. Modulation mode: GFSK 11. Working voltage: 1.8-3.6V 12. Charging time: 3 hours 13. Lithium battery capacity: 150mA 14. Sustainable use time: 200 hours 15. Lithium battery life: 3 years 16. Standby time: 30 days 17. Size: 248x150x6.4mm 18. Net weight: 460g