Wired Special features: 4 buttons optical USB cable mouse 800/1200/1600dpi adjustable Interface USB port Ergonomic and extreme comfortable design Advanced optical sensor technology High accuracy and reliability Smooth operation Works on most surfaces Size: 106.4mm 60.8mm 39.5mm Specification: Resolution hardware: 800dpi/1200dpi/1600dpi Comfortable shape for better handling Optical Technology tracking,no cleaning is required Compact design with comfortable firm grip Button strokers life: 3 million cycles Easy to install,plug & play 5VDC, 100mA (supplied by PC USB Port) System requirements: Window 10 or later Windows XP/Vista/7/8/10 Mac OS 10.5 or later Chrome OS