Newly Protective Case Bag Cover Protector With Bluetooth Keyboard for iPad 2 ipad2 Soft Layer Pink Built-in Lithium Battery (450mAh which can last for about one week). You can use this keyboard with most of devices that have bluetooth or USB adapter. (Accessory Only. iPad is not included. Apple&reg;,iPad&reg;, is registered trademarks of Apple, Inc. Apple does not endorse use of these products.) Continuous standby for 100 days, if you use 4 hours everyday that you can use 20 days. Specially designed for iPad 2/3/4. 2 in 1Bluetooth 3.0 Wireless Silicone Keyboard and a Case Stand for your iPad 2/3/4