Foldable, pocket size, bluetooth, for smart phones and tablets, 60 days of battery on standby and 2-3 weeks of battery power while in continuous use, aluminum. Power that last - up to 60 days of battery power on standby and 2-3 weeks of continues use. This powerful keyboard will makes sure that you have the energy when you need it to type up those lengthy emails. On the go - new sleek and portable folding bluetooth keyboard that pairs with any bluetooth device including laptops , tablets or your phone. When folded up this compact keyboard fits into any sized bag which makes it great for travel. Built to last - at 5.5 inches folded up and 11.5 inches open & flat, this flexible keyboard case is made out of high quality aluminum ensuring that this durable keyboard will stand the test of time. Compatible - works with multiple operating systems including apple, android and microsoft windows. Will pair with most bluetooth enabled devices including your computer, laptop, phone and tablet.