EagleTec KAZEE MC2M2403 1000dpi USB Optical Mouse (Orange Color S2263) Wired Optical Mouse Slim and Light: Sleek design measuring at only 16mm thick and weighing a mere 50 grams. Perfect for work and travel 1000 DPI High Performance Optical Sensor Total of 3 buttons, On and off power switch and connection button, Zoom in and out function