<p> </p> <p>Product Features</p> <p>1.Left-Hand Ergonomic Vertical Mouse: Specifically-designed for left-hander, scientific ergonomic design accommodates your hand in a completely natural position, without twisting your wrist around like a standard mouse, relieves pressure in wrist joint and reduce risk of cramping.</p> <p>2.Adjustable DPI Resolution: 800 \/ 1200 \/ 1600 DPI Optical Tracking Technology ensures greater sensitivity than standard optical mice for smooth and precise tracking on a wide range of surfaces, auto Power-Saving to save energy</p> <p>3.Greater Functionality: The Vertical Mouse have added back \/ forward buttons on the left side of the mouse provide great convenience for web browsing. (Note:next\/previous buttons can't be used on Apple computer).</p> <p>4.Easy Operation: Plug and play, no need any driver, enjoy the vertical mouse directly after inserted the USB plug</p> <p>5.Wide Compatibility: Compatible with Windows7\/8\/10\/XP, Vista7\/8 and Mac OS Linux etc( Page up\/down Button are invalid for Mac OS). Fits for desktop, laptop, PC, Mac book and other devices.(We will offer Worry-Free warranty and friendly customer service)</p>