Features: 1.APPLICABLE DEVICE: Foldable wireless keyboard, suitable for smartphones, tablets, or laptops with BT function, convenient and practical. 2.GOOD COMPATIBILITY: This keyboard supports for iOS, for Android, and for Windows system, supports multiple device connections, has good compatibility. 3.REASONABLE DESIGN: Scissor foot buttons ensure low noise operation, with concealed structure that is more beautiful, and does not hinder typing. 4.BUILT IN BATTERY: This tablet keyboard has built in 140mAh polymer lithium battery, with a battery life of up to 45 hours, suitable for long term operation. 5.FOLDABLE STORAGE: This keyboard supports 3 folds storage, lightweight and compact, can easily fit into a handbag or backpack, and easy to carry when going out. specification:Item Type: Foldable Keyboard Material: ABS BT: 5.1 Battery: Built in 140mAh Polymer Lithium Battery Support System: For iOS, for Android, for Windows Service Life: 45h Functions: Support Multiple Device Connection Support Touchpad PackageList: 1 x Keyboard 1 x User Manual 1 x Connection Line