B&A BT-102KB Bluetooth Wireless Keyboard with Detachable Keyboard Cover (Mainly designed to work with Smart Phones, and Tablet Computers) Portable Bluetooth wireless keyboard. It is about the size of a 7" tablet computer, and it can be easily stored in any purse or backpack. Cover is detachable, and keyboard works with various Bluetooth enabled tablet computers Bluetooth 3.0 (by Broadcom), which ensures wireless connection stability and devices compatibility. Wireless distance up to 30 feet (10 meters.) Low power consumption and extremely light weight. 2 pieces of AA batteries may last up to 3 months, and keyboard weighs less than 1 lb with batteries included.