Feature 1[Ultra Slim And Portable] This keyboard case for T40 Pro, slim design, very convenient for you to carry it to travel or business trips. 2[11 Inch Keyboard] The tablet stand cover with 11 inch detachable keyboard has more keys and wider keys than a 7 inch keyboard. 3[Compatible Devices] BT keyboard stand cover can be used with smartphones, tablets, laptops, and desktop computers, 10m operating range. 4[Full Protection] Keyboard case cover, has quiet keys, waterproof and dustproof. Scissor type keyboard, fast typing, comfortable hand feeling. 5[Touchpad Function] This keyboard protective cover with touchpad function, no need for mouse, flexible operation of keyboard, have a better use experience.SpecificationItem Type: BT Keyboard CaseMaterial: Imitation Leather, ABSKeyboard Parameters:BT 3.010m/32.8ft Range: Can Achieve Effective OperationModulation Mode: GFSKOperating Voltage: 1.8-3.6VOperating Current: <2.0mAStandby Current: 0.3-0.5mASleep Current: <40UACharging Current: 200mAStandby Time: >30 DaysCharging Time: <2 HoursBuilt in Polymer Lithium Battery: 180mAhContinuous Working Time: 44 HoursKey Force: 8010gKey Life: 5 Million ClicksOperating Temperature: -10-55Case: For T40 Pro .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xBT Keyboard1 xTablet Case