Wowpen-joy 5D 2.4GHz Wired USB Vertical Optical Mouse BLACK

5D 2.4GHz Wired USB Vertical Optical Mouse BLACKSpecifications:Ergonomically design, ease the harm of palm joint or muscle for long-time using mouseButton: 4 buttons in default / 1 scroll wheel ( middle button )2000 DPI resolution availableFor home or office use, plug and playThe cable length: 1.6mOperation distance: 10mHand dimensions: 180mm Features:This is a truly ergonomic mouse, vertical design, natural stretch of the wrist, arched back combined. With curved mouse ring design, contoured to hand in most natural state, to reduce hand fatigue Package included:1 x Vertical Optical Mouse Pictures presentation: