WIRED LEFT-HANDED MOUSE - Wired ergonomic vertical mouse for left-handers. It is designed for all different size of a hand, fitting the natural position of palm and wrist muscle while gripping the mouse ERGONOMIC DESIGN - Natural ergonomic vertical with left-handed design. Recommended to users suffering from Repetitive Strain Injuries (RSI) and users who work for particularly long periods on the computer. EASY TO USE - Easy navigation through 6 accessible buttons. Instinct two-level sensitivity adjustment of the most widely-used 1000/1600 DPI setup. NO NEED FOR A BATTERY - Plug and Play mouse with USB 2.0 interface, easy to start to use with standard-setting function. A high-quality rubber coating surface gives it a feel-good touch SYSTEM REQUIREMENTS - Windows 7, 8, 10 and above DPI - 1000/1600 DIMENSIONS - 4.92 x 2.44 x 3.03 inches CABLE LENGTH- 5.9 ft WEIGHT - 0.33 lb