Lenovo 540, Ambidextrous, Optical, RF Wireless, 2400 DPI, Grey
Lenovo 540. Form factor: Ambidextrous. Movement detection technology: Optical, Device interface: RF Wireless, Movement resolution: 2400 DPI, Buttons type: Pressed buttons, Control panel: 4, Scroll type: Wheel. Laser colour: Red. Power source: Batteries. Product colour: Grey