Lenovo 510 Wireless Combo Keyboard with Mouse Combo

Electrical Specifications5V, 100mA (maximum value) for receiverOn/off power switch on mouseAA *2 battery for keyboardAA *1 battery for mousePhysical SpecificationsPacked Physical Specification (Dimension) (in): 21*6.4*1.7inchUnpacked Physical Specification (Dimension) (in): Mouse:4.1*2.4*1.3inch/KB:16.7*6.1*0.8inchPacked Physical Specification (Dimension) (mm): 534*162*42mmUnpacked Physical Specification (Dimension) (mm): Mouse:106*61*33mm/KB:424*155*20mmPacked Weight: 1.01kgUnpacked Weight: Mouse:60g/KB:582g/KB:424x155x20Color: BlackHardware RequirementsSupported on laptops and desktops, including All-in-One, with USB port.Operating EnvironmentMaximum Relative Humidity(%): 95%Maximum Temperature: 40℃Mimimum Relative Humidity(%): 20%Mimimum Temperature : 0℃