Fangrui Product Details 1. Gk408 Three-fold Rechargeable Wireless Bluetooth Keyboard With Touchpad, Support Android Ios Windows 2. Features: 3. Support Android Ios Windows System, With System Switching Shortcut Keys, Which Can Be Easily Switched 4. Compatible With Bluetooth-enabled Devices 5. Touchpad Function, Easy To Operate 6. Chocolate Button, Fast Response And Comfortable Touch 7. Rich Shortcut Keys Make Your Operation Easier And Faster 8. Built-in Lithium Battery, Long-lasting Battery Life. At The Same Time, The Keyboard Has An Automatic Sleep Function To Avoid Waste Of Power When Not In Use 9. Usb Charging Interface, Can Be Used While Charging, Supports Multiple Charging Methods 10. Foldable Design, Easy To Carry 11. Note: 12. Ios System Phones And Tablets Do Not Support The Touchpad Function 13. Product Specifications: 14. Bluetooth Type: Bluetooth 3.0 15. Bluetooth Solution: Broadcom 16. Effective Operating Distance: Less Than Or Equal To 10m 17. Battery Capacity: 140mah 18. Continuous Working Hours: More Than 40 Hours 19. Standby Time: 60 Days 20. Charging Time: 2 Hours 21. Number Of Keys: 64 Keys 22. Working Voltage: 3.3-4.2v 23. Charging Voltage: Dc 5v 500ma 24. Button Life: 5 Million Times 25. Expanded Size: 315x92x6mm 26. Folded Size: 156x92x12mm