Eagletec KAZEE MC2M2403 1000dpi USB Wired Optical Mouse (Green Color) Wired Optical Mouse Slim and Light: Sleek design measuring at only 16mm thick and weighing a mere 50 grams. Prefect 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