Dynabook MR100, Ambidextrous, Blue LED, RF Wireless, 1600 DPI, White Dynabook MR100. Form factor: Ambidextrous. Movement detection technology: Blue LED, Device interface: RF Wireless, Movement resolution: 1600 DPI, Buttons type: Pressed buttons, Buttons quantity: 4, Scroll type: Wheel. Power source: Batteries. Product colour: White