Battery powered Batteries Mouse ambidextrous Ambidextrous HP XP361AA, Ambidextrous, Optical, RF Wireless, 1750 DPI HP XP361AA. Form factor: Ambidextrous. Movement detection technology: Optical, Device interface: RF Wireless, Movement resolution: 1750 DPI, Buttons quantity: 2, Scroll type: Wheel. Power source: Batteries. Works on any surface