2 AA batteries required. (included)

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Slim and Compact Keyboard With Numeric Keypad. Wireless keyboard has all keys in scissor-cross low profile structure;which makes it ulra-slim(keystroke travel 2mm),responsive and less noise. And you can use the Numeric Keypad for quick typing and data entry, No troubles with typing Numeric.
Stable Connection&Easy To Install. The wireless keyboard has powerful and reliable connection up to 10 m which is more stable data transmit and anti-interferance in 33 feet long range. Grey keyboard Only need a USB receiver to connect for using, No need to download drivers