Hama 00053850, Right-hand, Optical, RF Wireless, 1750 DPI, Anthracite, Black Hama 00053850. Form factor: Right-hand. Movement detection technology: Optical, Device interface: RF Wireless, Movement resolution: 1750 DPI, Buttons type: Pressed buttons, Buttons quantity: 3, Scroll type: Wheel. Product color: Anthracite, Black