This wireless mouse istrying to break normal procedure. It is entirely different from traditionalmouse, as you can see, it is vertical. It is devoted into keep your handnatural and comfortable for working hours, so that to prevent from carpaltunnel syndrome. With excellent stability and non-delay technology, brings youa special and healthy experience of mouse using. Features: VerticalErgonomic Design: eases tension on the wrist and hand, helps you to keep awayfrom carpal tunnel syndrome. High accuracy control: non-delay technology allows high sensitivity, provides up 800/ 1200/ 16003 levels of adjustable DPI, you can make it more precise for things, like colorcorrecting and photo editing, or faster for browsing. Slippy andnature feeling: made of material feels like human skin, gives users the mostcomfortable hands feeling and avoids from sweat and slipping. Long Time Use:built-in rechargeable lithium battery, low power consumption, can be used for up tohalf a month after fully charged. 2.4GHzWireless Control: no messy wire, wireless transmission can operate up to 10meters. WideCompatibility: plug and play, fit well with most desktops or laptops with a USBport for connection. Compact andportable: light, simple and modern design, easy to carry, suitable for game, home,office, net bar, etc. Specification: Color: Black Material: ABS Type: VerticalOptical Mouse TrackingMethod: Optical Compatiblefor: PC/ Laptop Support OS: for Win 98/ 2000/ ME/ XP/ Vista/ Win7/ Win 10/ for OS XWirelessFrequency: 2.4GHz WirelessDistance: 10m AdjustableDPI: 800/ 1200/ 1600 Button: 6 (Left/ Right/ Scroll Wheel/ Forward/ Backward/ DPI Switch) Standby Time:30days (Maximum) Working Time:15days (Maximum) Size: Approx. 12x 9.5 x 7cm / 4.7 x 3.7 x 2.8in PackageWeight: 151g Package list: 1 * Vertical Mouse 1 * USB Receiver 1 * USB Charging Cable 1 * User Manual (English) .