Foldable keyboard bluetooth compatible with iOS, Android and Windows. It can be widely used in iPad, laptop, desktop computer and table. Folding keyboard only 5.4 ounce. Ultra-Slim and small size, can be folded into your pocket or backpack to carry around, which is perfect for travel, work and daily life. Foldable wireless keyboard built-in rechargeable battery, 2 hours of charging can provide up to 40h of continuous typing. One full charge last enough for your short business trip or vacation.