BATTOP Upgrade Foldable Bluetooth Keyboard with Kickstand Universal for iOS Android Windows (Black) 1.Upgrade Features:The Support Frame has been changed from the previous plastic to alloy which more durable;Exterior surface made rounded handle to prevent hands scratched.It has been increased a non-slip mat in the tablet bracket to prevent fall when the the tablet or phone placed. 2.Comfortable Keys:This Ultra thin keyboard provides you with very natural and pleasing typing experience. More than 40 hours of effective usage time for Every full charging 3.Strong Compatibility and Stability:Supports and Switch easily to three Major Operating System Devices 4.Portable Design:Open Size:9.25* 6.29*0.19",Closed Size: 9.25 x 2.16 x 0.72", Convenient to carry it in your pocket/Backpack/Messenger bag/Cases. Travel anywhere freely without the hassle of tangling wires 5.What You Get:1* BATTOP Foldable Bluetooth Keyboard,1* USB Charging Cable,1* Instructions,1 Year Manufacturer's Warranty and Friendly Customer Service