1 Design like a notebook keyboard, good outlooking and feeling good. 2 Built-in high-capacity rechargeable lithium battery, long standby time. More durable. 3 With usb interface. Connect the device to PC through USB connecting cable or iPad / iphone power adapter to charge the keyboard. 4 Charging Time is 2 hours, it could use 40 hours after fully charged. 5 Compatible for Iphone3G,4G,iPad1/iPad2. 6. With a number of shortcut keys make the operation more convenient. 7. When iPad not in use,pls fix it on the keyboard, this way can provide effective protection for the iPad. 8. Telephone receiver could be disassembled freely , it can be used in iPad, iPhone alone, after the disassembled