B&A BT-103KB Bluetooth Wireless Keyboard with Detachable Keyboard Cover (Mainly designed to work with Smart Phones, and Tablet Computers) Normal Keys: 47 Function Keys: 0 Power Supply: 2 AAA batteries (batteries not included) Operating Time: up to 3 months Distance: 33 feet Dimensions: 6.70 x 4.17 x 0.67 / 17.0 x 10.6 x 1.7 cm Parts: 1 year