DY-E10 2 in 1 Removable Bluetooth Keyboard + Protective Leather Tablet Case with Touchpad & Holder for Lenovo Tab E10 1. Using stable performance chip. 2. Built-in 220mA lithium battery, can last for 60 hours. 3. Equipped with Micro USB cable for charging, it takes about 3 hours to charge. 4. Sleep function, if no operation is performed, the keyboard will automatically enter the power saving mode within 15 minutes; 5. Applicable to Apple, Android, and Windows for universal or single-system use. 6. 59 button design, with 14 IPAD 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. The surface of the keyboard adopts wire drawing process, which is very textured. 8. Scissor button design, sensitive typing, quick response and good hand feeling. 9. Modulation mode: GFSK 10. Working voltage: 1.8-3.6V 11. Charging time: 3 hours 12. Lithium battery life: 3 years 13. Standby time: 30 days 14. Size: 258x172x7.7mm 15. Net weight: 560g