Note:This keyboard fit iOS & Android & Windows Tablet,it is need depending on your tablet operating system,switching bluetooth keyboard system, if you want realize switch,you need to press the fn key and system keys at the same time. Feature: 1.2014 New Design,2 in 1 Detachable Design, Folio Stand Case Cover + Detachable 3.0 Bluetooth Keyboard For 10.1" Lenovo Tab 4 - 10 Inch ZA2J0007US Android 7.1 Tablet When you want use the keyboard,this is keyboard case,When you travel or do not want to use the keyboard, you can use the keyboard to stay at home,This is a very practical. 2.Durable, stylish & streamlined protective case designed for 10.1" Lenovo Tab 4 - 10 Inch ZA2J0007US Android 7.1 Tablet 3.Removable wireless Bluetooth 3.0 ABS keyboard(Support Bluetooth 2.0). 4.Foldable back stand converts case to tablet display stand for easy viewing. 5.Special function keys,like Sleep, lock, Slideshow home, etc.but the function cannot be realized the mute key(Note:Because it is designed for Android/IOS/Windows Tablet, but the Tablet have many different brands,therefore the individual keys may be on different brand plate can not realize the function). 6.Built-in rechargeable lithium battery. Specifications: 1.Built-in Lithium polymer battery capacity: 200mah. 2.Voltage:3.7V Power charge connector. 3.Input: Mico USB charge 5v. 4.Standby time:20days apptox. 5.Continual working time:80 Hours. 6.Charging time :2.5-3hrs. 7.Operating temperature:-20 degree - 55 degree. 8.Storage temperature:-40 degree - 70 degree 9.Working distance :10 meters Package included: 1* Detachable Wireless Bluetooth Keyboard(Tablet not include) 1* USB Charge Cable 1* User Guide