This wireless mouse is trying to break normal procedure. It is entirely different from traditional mouse, as you can see, it is vertical. It is devoted into keep your hand natural and comfortable for working hours, so that to prevent from carpal tunnel syndrome. With excellent stability and non-delay technology, brings you a special and healthy experience of mouse using. Features: Vertical Ergonomic Design: Ease wrist pain which is caused by long-time mouse using. Your hand with the arm keeps straight and placed naturally when you use a vertical mouse. High precision control: non-delay technology allows high sensitivity, provides up 800/ 1200/ 1600 3 levels of adjustable DPI, you can make it more precise for things, like color correcting and photo editing, or faster for browsing. Smooth and natural feeling: made of material feels like human skin, gives users the most comfortable hands feeling and avoids from sweat and slipping. Long Time Use: power supply by 2pcs AAA battery, low power consumption, ON/OFF button for easy switch. 2.4GHz Wireless Control: no messy wire, wireless transmission can operate up to 10 meters. Wide Compatibility: plug and play, fit well with most desktops or laptops with a USB port for connection. Compact and portable: light, simple and modern design, easy to carry, suitable for game, home, office, net bar, etc. Specification: Optional Color: Black, White Material: ABS Type: Vertical Optical Mouse Tracking Method: Optical Compatible for: PC/ Laptop Support OS: Windows 98/ 2000/ ME/ XP/ Vista/ Win7/ Win 10/ for MAC OS Wireless Frequency: 2.4GHz Wireless Distance: 10m Adjustable DPI: 800/ 1200/ 1600 Button: 6 (Left/ Right/ Scroll Wheel/ Forward/ Backward/ DPI Switch) Power Supply: 2 * AAA battery (NOT Included.) Package Size: Approx. 13 x 7.5 x 9cm / 5.1 x 3.0 x 3.5in Package Weight: 123g Package list: 1 * Vertical Mouse 1 * USB Receiver 1 * User Manual Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .