E-More Full-sized GK308E Portable Foldable Wireless Bluetooth Keyboard For IOS Phone Pad Windows Android Symbian Tablet /Smartphone/Computer IMPORTANT NOTE: Please follow the instructions that is provided in the manual inside the package for troubleshooting. Contact the manufacturer / seller / Amazon for any clarification The key cap used "X"-structure design, quieter and more comfortable. Quick and easy comparing with your mobiles devices. Automatically pairing-No need hand pairing for second time. Anti-dirt and Portable anti-dirt when fold it. Keep key cap cleaner and easy to take anywhere. Aluminum case + ABS-High quality material case, to protect the keyboards steadily and stable. Long-Range: Bluetooth 3.0 technology provides a cable-free &amp; clutter-free connection. Operating distance: 10m.