VisionTech waterproof flexible mini bluetooth keyboard for Ipad/Iphone 4/iPhone 3GS/PC/Mac/Windows Mobile/Linux/Windows Bluetooth Keyboard works with iPad, iPhone 3gs 4 4G, PC, Mac, Windows Mobile, Linux, Symbian Long lasting rechargeable lithium-ion battery Perfect size! Not too miniature, but smaller than a full size keyboard (12"x4.5") Retractable USB charging cable. Nano sized Bluetooth adapter available upon request Bendable, Flexible, Washable, Foldable!!