ERGONOMIC MOUSE FOR LEFT-HANDED USERS: Vertical mouse promotes better forearm positioning and reduces overall muscle used while operating a mouse; Portable size mouse that will not need much space to be carried around while travelling; Weight: 0.23 lb. (108 g) CONVENIENT DESIGN: A 6-button layout with built-in DPI switch button; Easy access layout with side buttons mapped as shortcuts for forwards and backwards to the navigating history; The USB cable is 5.9 feet (1.8 meters) long; Dimensions: 4.13 x 2.64 x 2.28 inches (10.5 x 6.7 x 5.8 cm) SMOOTH TRACKING MOVEMENT: The advanced optical tracking sensor provides smooth and accurate tracking movement on any type of surface; One click adjustable DPI setting: 1000/1600/2400/3200 SILENT-CLICK MOUSE: Suitable for those who needs a silent working environment, whether preference or limiting distractions when working WIDE COMPATIBILITY: Supports HID (Human Interface Device) spec; Designed for Windows 7, 8, 10 (Note: All the features wi
