MAIN OVERVIEW FEATURES: Pointing Device Connectivity Technology: CableMovement Detection: OpticalMovement Resolution: 1000 dpiNumber of Total Buttons: 3Scroller Type: Scroll WheelPointing Device Host Interface: USB 2.0Color: Black,SilverHeight: 1.5"Width: 2.5"Depth: 4.9"Weight (Approximate): 3.36 ozPackage Contents: Full Size USB Optical MouseWarranty InformationGreen Compliant: YesGreen Compliance Certificate/Authority: WEEE,RoHSCountry of Origin: ChinaLimited Warranty: 2 Year