Product Specification1. Optical type: Red wave2. Operation voltage: DC 5V+-5%3. Size: 128 x 63 x 40 mm (5*2.5*1.6 inches)4. Frame Rate: 4000 Frame / sec5. Acceleration: 15g6. Interface: USB7. Weight: 130g  (4.58oz)8. Buttons: 69. DPI: adjustable 400 / 800 / 160010. Switch Life: 3,000,000 times11. Cable length: 1.8 meter12. Product Compatibility: Windows 98 / 2000 / ME / NT / XP / Win 7 / Vista / OSX 10.2~