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: eases tension on the wrist and hand, helps you to keep away from carpal tunnel syndrome. High accuracy 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. Slippy and nature feeling: made of material feels like human skin, gives users the most comfortable hands feeling and avoids from sweat and slipping. Long Time Use: built-in rechargeable lithium battery, low power consumption, can be used for up to half a month after fully charged. 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: Color: Black Material: ABS Type: Vertical Optical Mouse Tracking Method: Optical Compatible for: PC/ Laptop Support OS: for Win 98/ 2000/ ME/ XP/ Vista/ Win7/ Win 10/ for OS X Wireless Frequency: 2.4GHz Wireless Distance: 10m Adjustable DPI: 800/ 1200/ 1600 Button: 6 (Left/ Right/ Scroll Wheel/ Forward/ Backward/ DPI Switch) Standby Time: 30days (Maximum) Working Time: 15days (Maximum) Size: Approx. 12 x 9.5 x 7cm / 4.7 x 3.7 x 2.8in Package Weight: 151g Package list: 1 * Vertical Mouse 1 * USB Receiver 1 * USB Charging Cable 1 * User Manual (English) .