ELEGIANT Profession E-Sport Gaming Sacred Beetle Wired Mouse with 4 Adjustable DPI Resolution 400-800-1200-1600 6 Key Programmable 1600DPI 4 Adjustable DPI Level Ergonomic Design, Comfortable Feeling, Reduce Tiredness Cool Light Design, Eco-Friendly Silica Gel, Soft and Confortable Unlimited firepower and self-defining dual mode switching system and ergonomic design and long term use without fatigue Rated voltage/current: DC 5V/ &lt;100mA Compatibility: Windows 98 / 2000 / ME / NT / XP / Win7/ Win8/ Win8.1/ MAC OS