Aluminum Smart Bluetooth Folding Keyboard, a beautiful design, Luxury gift to show your brand on all kinds of events. It is workable with both IOS, windows and Android system. You can use it everywhere by carrying it in your pocket, and enjoy quick and smooth input with the full size keyboard. Battery: 100mAH, SIze: L11 1/4″ x W3 1/2″ x thick 1/8″