MX Vertical is an advanced ergonomic mouse that combines science-driven design with the elevated performance of Logitech's MX series. The natural handshake position reduces wrist pressure & forearm strain. The unique 57 vertical angle has been optimized for an ergonomic posture without compromising a pixel of performance. The mouse's 4,000 DPI high-precision sensor results in four times less hand movement & reduces fatigue. The cursor speed switch allows you to instantly adjust DPI speed & accuracy with the touch of a button. MX Vertical stays powered for up to four months on a full charge & gets three hours of use from a one-minute quick charge. Connector / Port / Interface: USB; Left / Right Hand Use: Left / Right; Mouse Technology: Optical; Wired / Wireless: Wireless.