Mice & Trackballs Ergonomic Vertical Mouse 2.4G Wirele USB Rechargeable 1600DPI Office Mice 6D Mini Silent Mouse For Computer Laptop PC Specification: Item: Ergonomic vertical wirele mouse (rechargeable) Color: black, pink, white Size: 105*67*60mm Weight: 78g Charging cable: 27cm Material: ABS Button: 4D Adjustable DPI: 800-1200-1600DPI Connection mode: 2.4G Working distance: 10m Battery capacity: 400mAh Sleep: 10 minutes Wake up: move the mouse Package Including: 1*Vertical Mouse 1*USB Receiver 1*Charging cable Features: *A vertical ergonomic design that keeps the wrist and arms natural shape perfectly on the hand held. *Plug and Play mouse with USB receiver, easy to start to use with standard setting function. *Optical Sensor,3-speed DPI high resolution, sutable for most desktops *Greater functionality and easily brows the Web Page *Optical tracking technology, working on many different surfaces and ideal usage for home, office or game. *M size,suitable for small hand people like girls,kids and adults. *Built-in rechargeable battery, no need to replace the battery, environmental protection. *System support: Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 98, Mac OS, Windows ME, Windows *2.4 GHz Wirele mouse, comfortable touch. It is very convenient to portable,Receiver storage space and carrying easily