100% new and high quality2.4Ghz Wireless Optical MouseElegant, Ultra Slim, Comfortable GripSwitch Life: 5 million cycle...3 Buttons with scroll wheelScroll easily in any directionNano Mini Receiver hidden in the Mouse BottomBuilt-in Energy Saving system.Wireless Technology works on most surfacesWireless carrier frequency: 2405MHz-2476MHz16 wireless working channels, automatic frequency jumpingMini Receiver can be contained and easy to carryMaximum acceleration: 14 inches per secondEffective: 2.4GHz wireless transmission up to10 metres operating distanceIntelligent connectivity, No Need to Code, Plug & PlaySize:115 x 60 x 20mmPower: 2 x AAA Batteries(Not Included)How 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.Step4: Turn the Power Switch Button to "ON" (Underneath the Mouse). The LED Light will Light Up. Then the mouse will connect with the dongle automatically and start working.