Aspect Ratio: UnknownBrand: GoldtouchColor: BlackFeatures: Programmable dpi: 800 1200 1600 - plug & play: Wireless usb 2.4 Ghz receiver allows for quick set upComfortable feel: Anti-slip texture grip and rubberized coating provide maximum comfortIdeal slope: 66° slope creates optimal comfort and hand/wrist positioningForward/back keys: Page forward or page back with convenient thumb keysFlange accessory: Detachable ergo-grip flange keeps palm off the surface of the deskPlatform: Windows 8Publisher: GoldtouchDetails: The Goldtouch semi-vertical mouse is perfectly sloped at 66o to prevent wrist stress and provide the ultimate comfort fit for healthy computing. Adjustable weights: Four detachable 5g block weights for customized weighting.UPC: 183238000568EAN: 0183238000568