Hama MW-300, Ambidextrous, Optical, RF Wireless, 1200 DPI, Anthracite Hama MW-300. Form factor: Ambidextrous. Movement detection technology: Optical, Device interface: RF Wireless, Movement resolution: 1200 DPI, Buttons type: Pressed buttons, Buttons quantity: 3, Scroll type: Wheel. Power source: Batteries. Product color: Anthracite