Features: ERGONOMIC, SLEEK AND RECHARGEABLE DESIGN -- Scientific ergonomic design encourages healthy neutral "handshake" wrist and arm positions for smoother movement and less overall strain MULTIFUNCTION AND CONVENIENT -- Advanced "Page Back" and "Page Forward" functionality buttons provide convenience when web page browsing. 800 /1200/1600 DPI Levels -- Easily adjusts the sensitivity of the mouse HIGH-CAPACITY RECHARGEABLE BATTERY -- Built-in rechargeable battery. You no longer need to buy batteries, very convenient !! EASY TO USE -- One nano USB receiver at the bottom of the mouse, Just Plug and Play! WIDELY COMPATIBLE -- Widely compatible with Windows 2000 / XP / Vista / 7 / 8 / 10 / Linux. Note: Not compatible with Mac OS, Apple Products. Once you get used to the ergonomic mouse, you will love it so much ! OPTICAL VERTICAL MOUSE - HEALTHY MOUSE This ergonomic mouse is full of vitality, innovation, and has many health benefits. By changing the way you use your wrist and arms, you will effectively reduce pain and discomfort. Compatible Systems : Windows 2000 Windows XP Windows Vista, Windows 7, Windows 8, Windows 10 Linux , Android ( Note: The previous/next page thumb buttons are not recognized on the Mac OS X ) Sleek and rechargeable : Turn heads with a futuristic design. Made for increased functionality and comfort, this rechargeable vertical mouse combines a handshake grip. Batteries no longer need to be replaced frequently. Recharge Quick-connect design allows you to switch from wireless to a charging cable connection so you never run out of power. Comfortable and classy: Tired of using the traditional grip? Take a break from overly-clunky or uncomfortably tiny mice. The ergonomically-designed thumb rests and grips fit the contour of your palm for maximum comfort. Easy-access use: Six buttons give you improved control over your computer's systems. Whether dragging and dropping, selecting large volumes of data, or casually gaming, this mouse provides a low-cost, effective solution for multiple computing needs. Vertical Mouse Specification: Connection Mode: 2.4G USB Item Weight:95g. Item Dimension:5.0 x 3.0 x 2.5 in Sensitivity: 3 DPI modes: 800-1200-1600 Adjustable Package Contents: 1 x Vertical Ergonomic Optical Wireless Mouse 1 x 2.4G USB receiver ( USB Receiver is at the bottom of the mouse ) 1 x 78cm Charging cable