Evoluent Vertical 4 Right-Handed Wireless Mouse, Goldtouch KOV-VM4RW for Office Use

The wildly popular Evoluent™ VerticalMouse™ is back and even better than before. With more intuitive navigation and a big dose of ergonomics, you won’t want to stop using it when the day ends.
• Eliminates arm twisting: Patented shape supports your hand in a relaxed handshake position that eliminates the forearm twisting experienced with other mice.
• Changes how you grip: The grip is the same as an ordinary mouse, just turned sideways. No matter the size of your hands, you’ll adjust quickly and can expect pointer control that’s just as accurate as with any other high-quality mouse.
• Easy to use buttons: All five buttons are easily operable without contorting your fingers. For XP Pro, XP Home, and Vista 32 users, each button can be programmed to suit your desires.
• Variable pointer speed: A switch on the side of the mouse allows users to easily change pointer speeds between extra low (XL), low (LO), medium (MD), and high (HI).
With the Evoluent™ VerticalMouse™, you’ll be more productive — and more comfortable, too.
System Requirements:
PC
• Includes drivers for Windows XP, Pro, and XP Home for programming all 5 buttons. The driver is not required. The VerticalMouse 4 still has basic functionality without it. Freeware driver for Windows Vista & Windows 7, 8, 10 (32 and 64 bit), XP x64, 2003, and 2000 here. Although it is freeware, please make a donation to the author if you like it. (Evoluent has no business relationship with this vendor.)
• USB only. Not compatible with PS2.
Mac
• Button in OS 9 without a driver. 5 buttons in OS X 10.4.5 without a driver: left click (top), right click (middle), expose' (bottom), show desktop (wheel), select window (thumb). USB OverDrive sells a universal Mac driver that enables button programming. (Evoluent has no business relationship with this vendor.)
• USB Port
Unix
• 3 buttons without a driver. Wheel button is middle click.
• USB port.
Linux
• 5 buttons in XFree 4.0.1 or higher and Knoppix Linux 3.9 or higher without a driver: left click (top), right click (middle), middle click (bottom), middle click (wheel), right click (thumb).
• USB port.
Resolution: variable 800-2600 dpi true optical resolution

Dimensions:
• Length: 4.375 inches / 11.11 cm
• Width: 3.44 inches / 8.74 cm
• Height: 3.625 inches / 9.21 cm
• Weight: .75 lb / .34 kg
• Cable Length: 6.6' / 2.01 m
Sizing:
Using a ruler or tape measure, measure the distance from the crease in your wrist to the tip of your ring finger. This mouse will accommodate measurements 7" and above.