The Micropack KM-218W Keyboard and Mouse Wireless Combo have a metal black color finish with membrane-type switches. there are a total of 78 lower case buttons, 12 multimedia keys, and 4 composite control keys. You will need 2 AAA batteries for both the keyboard and the mouse. The mouse of the combo set has a DPI range of 1000 to 16000 DPI and it uses a nano receiver for which has a range of 10 Meters. The required current for the keyboard is 3V and 10 aM and for the mouse is 1.5V and 50mA.