Fangrui Product Details 1. M10s 2 In 1 Removable Bluetooth Keyboard + Leather Tablet Case With Backlight & Holder For Lenovo Tab M10 Tb-x505x 2. Using Stable Performance Chip. 3. Built-in 350ma Lithium Battery, Can Be Used Continuously For 60 Hours (5 Hours Of Continuous Use When The Backlight Is Turned On). To 4. Micro Usb Cable Charging, Charging About 3 Hours. 5. Sleep Function, If No Operation Is Performed, The Keyboard Will Automatically Enter The Power Saving Mode Within 15 Minutes. 6. Ios, Android, And Windows Are Universal Or Single-system Use. 7. 59 Button Design, With 14 Ipad Shortcut Function Keys. 8. The Buttons Have Been Silk-printed With Uv Peritoneal Treatment, Which Is Durable And Will Not Fade After 5 Million Rubs And Knocks. 9. The Surface Of The Keyboard Adopts Wire Drawing Process, Which Is Very Textured. 10. Scissor Button Design, Sensitive Typing, Quick Response And Good Hand Feeling. 11. Modulation Mode: Gfsk 12. Working Voltage: 1.8-3.6v 13. Charging Time: 4 Hours 14. Lithium Battery Capacity: 350 Ma 15. Sustainable Use Time: 60 Hours (5 Hours Of Continuous Use When The Backlight Is Turned On) 16. Lithium Battery Life: 3 Years 17. Standby Time: 30 Days 18. Size: 248mmx150mmx6.4mm 19. Net Weight: 460g