Kiano 4 (White) - Bluetooth keyboard case for iPhone 4 Kiano 4 is a 2-in-1 design of a sliding keyboard case for the iPhone 4. 3.5mm is of the total thickness of a backlit keyboard that never seen before on the market. Designed with alloy metal case-frame, abrasion proof keys and glass-like acrylic back-plate, Kiano 4 is durable and maintains the original elegant look of iPhone 4 with its keyboard of just 3.5mm in thickness. Unlike other keyboard products, we offer black and white as your choice. We make sure our Kiano 4 matches with your iPhone 4 perfectly, not just tight-fit in shape, but also in color.