Folding Portable Wireless Bluetooth 2.0 Keyboard For Tablet PC / Windows Tablet - Black. Unimited bluetooth 2.0 interface. Built-in Lithium battery. Comfortableness and ergonomic design. Unique super enger-saving mode makes the battery life 50% longer than similar products. Unique power management software will make power be automatically displayed in the system. Using the industry-leading bluetooth software solution. Built-in software solution, bluetooth man-machine interface equipment, and bluetooth 2.0 of the bluetooth SIG complying with the standard version. To work in Windows operating systems 2000, Server 2003, XP, Vista and MAC. Buy this product and Save $1.9 Off for Folding Portable Wireless Bluetooth 2.0 Keyboard. With coupon code: FoldingKeyboard at checkout.