Description: Features:100% brand new and high quality.2.4GHz wireless mouseOptical technologyNumber of keys: 3Battery: 2xAAA (not included)10m effective distanceBuilt-in energy saving systemElegant and ergonomic designScroll easily in any directionComfortable in usingUltrathinInstruction for use1. Open the battery cover2. Take out the USB receiver form the battery compartment, plus it into a USB host on your PC.3. Insert 2 AAA batteries with correct polarity (+/-) as indicated.4. Close the battery cover. 5. Open the power switch.6. Don't need to pairing, plug and play.7. When touch left, middle and right, you need to press down. Using the scroll wheel show as pic1, you can slide your figure up and down.8. If you do not use this mouse, nano receiver can be placed at the beside of the battery compartment.Precautions:Put into the AAA alkaline batteries, note the polarity of the battery, in order to avoid damage to the machine.Turn off the mouse power switch to extend battery life, when you do not use the computer.Low battery can not be used, and please replace the batteries with new ones. Specifications:Type: MouseFeatures: MiniMaterial: Plastic, MetalSystem support: OS Windows XP 7 8 10Interface: WirelessConnection: WirelessReceiver: WithOperating Voltage: 3VOperation Current: 15mAOptical Resolution:1200DPIColor: BlackSize: 1125720mm/4.402.240.79in (Approx.)Quantity: 1PC (other accessories demo in the picture is not included) Note:1.Transition: 1cm=10mm=0.39inch2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1 X Mouse