Comfortable, convenient and precise, this mouse has a high-precision optical sensor which works on many surfaces, USB connectivity and five buttons including a clickable 4-way tilt scroll wheel.• The mouse has a symmetrical, sculpted design, so it's perfectly comfortable for both left- and right-handers. And the rubber sides provide a smooth, secure grip, so you’ll always be in control when you’re working. • Travel with confidence, knowing that the mouse has a high-precision optical sensor, so you can use it on any work surface. And USB connectivity means easy plug and play use for greater convenience. • This optical comfort mouse has an optical sensor (1200 cpi) and five customisable buttons: two primary buttons, a clickable four-way tilt scroll wheel and a back and forward button – all designed for your ultimate comfort and productivity.