1. Logitech K780 Multi-device Bluetooth + Unifying Dual Mode Wireless Keyboard With Stand (black) 2. : 3. The Input Can Be Switched Between 3 Different Devices. 4. Dual Connection Technology And Long Battery Life. 5. Full-size Keyboard, Low Profile Buttons, Button Layouts To Familiarize You. 6. From Smartphones To Ipad Pro, A Wide Range Of Devices Can Be Securely Attached To The Ideal Angle For Easy Reading And Input. 7. Suitable For A Variety Of Operating Systems. 8. Specification: 9. Size: 158x380x8mm. 10. Weight: 875g. 11. Supports Most Smartphones And Tablets Up To 11.3mm Thick, Either In Portrait Or Landscape Mode. Only For Landscape Mode Ipad Pro (12.9 Inches). 12. Wireless Range: 10 Meters. 13. Battery: 2 X Aaa. (not Included). 14. Battery Life (non-rechargeable): 24 Months. 15. Usb Connection: An Available Usb Port Is Required. 16. Bluetooth Connection: Bluetooth Smart Ready Device (hid Profile) That Requires Keyboard Support. 17. Logitech Technology: 2.4ghz. 18. System Requirements: Computers, Phones And Tablets That Support External Keyboards. Windows 7, Windows 8, Windows 10 Or Higher. Chrome Os. Mac Os X 10.10 Or Higher. Android 5.0 Or Higher. Ios 5 Or Higher.