Mice & Trackballs Features:100% Brand New and High Quality !2.4Ghz Wirele Optical MouseElegant, Ultra Slim,Comfortable GripSwitch Life: 5 million cycle3 Buttons with scroll wheelScroll easily in any directionNano Mini Receiver hidden in the Mouse BottomBuilt-in Energy Saving system.Wirele Technology works on most surfacesWirele carrier frequency: 2402MHz-2480MHz16 wirele working channels, automatic frequency jumpingMini Receiver can be contained and easy to carrySpecifications:Maximum acceleration: 14 inches per secondEffective: 2.4GHz wirele transmiion up to10 metres operating distanceIntelligent connectivity, No Need to Code, Plug & PlaySize:115 x 60 x 20mmPower: 2 x AAA Batteries(Not Included)Current: 1.5mA 1.5VWeight: about 65gHow to use:Step1: Open the Battery Cover(Underneath the Mouse), Install 2pcs Alkaline AAA Batteries.Step2: Take out the USB Nano Dongle, and close the Battery Cover.Step3: Plug the USB Nano Dongle in the USB Port.Package included:1 x 2.4GHz USB Optical Wirele Mouse(Without original packaging)1 x Mini Receiver