Universal Foldable Keyboard is the perfect travel companion, designed to work with iPad, iPhone, Android, Windows tablets, and Windows Phone. Its ultra-thin, lightweight, compact design lets you easily take it wherever you go so you can get more done on your tablet or smartphone no matter where you are. Only 5mm thin, the innovative, foldable design easily fits into a purse, bag, or pocket. The built-in rechargeable battery provides up to three months of usage on a single charge & water repellent keyset & fabric helps protect against accidents. Spill resistant. Rechargeable (included). Manufacturers 3 year limited hardware guarantee.