There are 2 models optional, different model with different interface and appearance, please choose suitable model before purchase: (1)2 fold Bluetooth keyboard,No touchpad (2)3 fold Bluetooth keyboard,with touchpad [ Scissor-Switch Design ] - The scissor-switch design makes it comfortable to type and there is no noise, providing you mute using experience. [ Long Working Time ] - The keyboard adopts built-in 120 mAh lithium battery, which can support 20 hours lasting working and 30 days standby [ Foldable and Compact ] - You can carry the lightweight and mini keyboard with you to anywhere you want. It is very suitable for traveling. [ Classic Color ] - The classic whit color and black color for you to chose. It will perfectly suit for your digital device style. [ Universal ] - The keyboard is compatible for most tablet, computer and phone. And you can use Wubi input method by the keyboard, in ios, Android and Windows SPECIFICATION Material: ABS Voltage: 3-4.2v Connection method: Bluetooth connection Interface Type: USB 3.0 Battery capacity: 120 mAh lithium battery Bluetooth protocol: 3.0 Effective distance: >10meters Button life times: 3 million clicks System support: support for ios, Android, Windows system Working time:140 hours 3 Folding Bluetooth keyboard 3 System compatible + Touch Version Humanized Folding Highly Resnonsive Touchnad,Triple Folding Keyboard Magnetic Adsorption Lock screen function Built-in rechargeable lithium battery,48 hours of continuous typing on a single charge, 560 hours of standby time