Product Features:1. Ergonomic design, long-term use without fatigue2. Unique dual-mode switching3. 500-1000HZ return rate4. Four gears adjustable DPI 800/1200/1600/20005. Gilded USB, more responsive6. All-copper with magnetic ring and anti-jamming nylon braided line7. Permanent always-on mode8. Compatible with Windows ME/2000/XP/Vista/Windows 7Product Specifications:1. 7D optional gaming mouse2. Size:115*77*39 mm (4.5*3*1.6 inches)3. Resolution: 800/1200/1600/2000 adjustable DPI switch4. Key NO.: 7 (forward/backward/DPI/firepower key)5. Key force: 70 +/- 5 g (4.8oz)6. Rated voltage/current: DC 5V-100mAPacking Content:1 x AULA Killing The Soul mouse