QQ-Tech&reg; Patented Samsung Galaxy S4 SIV I9500 Ultra-Slim Slide-Out Detchable Multifunction Wireless Bluetooth Keyboard Case Sliding Adajustable Standing Backlight Specially Designed with solid protective back shell case cover-black Specially designed and Compatible for Samsung Galaxy S4 i9500; Bluetooth Version: V3.0; Brand New & High Quality ; super-thin, Ultra-Slim ,form-fitting shell designed to snap on securely & perfectly for your galaxy s4; Fully Integrated slide-out Bluetooth QWERTY keyboard allows you to switch from the touch screen to a physical keyboard, keep the same tactile feel as using without case for galaxy S4; Conveniently designed to provide quick access to all for Galaxy S4 controls, features, camera, and ports; Backlighting for keyboard when typing in dim areas; Build in detachable Hard protective Back Cover for Galaxy S4;