Quick view: This QWERTY keyboard is laid out intelligently and has a comprehensive set buttons for PC feature, F1-F12, volume up down and mute,play, pause, forward and backward, page up and down, Windows key, email, home, left and right mouse button etc. This will make using internet for television, working, play games much easier. Specification:Working voltage:+3V Static current:50uA Key dynamic current:1.5mA Trackball dynamic current:15mA Keyboard size:10.24*5.12*0.99’’ Weight:8.01ounces Keys:59 keys+15 Multi media keys+20 hot keys Key elasticity:50±8g Key pre travel:0.5±0.2mm Key total travel:1.7±0.5mm Operation distance:10m Using frequency:2.401-2.483G Key using : over 8 million times Material:ABS Color: Black Battery Type: 2pcs of AA batteries(not included) Package including: 1 * Wireless keyboard 1 * Wireless receiver 1 * User manual Note: This device requires a USB port to operate. Delete key functions as BACKSPACE.