Ergonomic Desktop Wireless Vertical Mouse Portable Rechargeable Usb Computer Mice 2400dpi Gaming Mouse For Pc Laptop Office Home Description: 1:2.4GHz Wireless Connectivity (USB receiver) 2: 1 x AA 1.5V Battery (Battery not included) 3:Ergonomic designed to remit and prevent carpal tunnel syndrome. 4:Optical laser technology for precise control 5:Easy to use, comfortable to hold, prevent mouse hand. 6:L/R mouse buttons, 2 thumb buttons, and a clickable scroll wheel , 1 dpi buttons(dpi +/dpi -). Specifications: This is a 2.4G wireless vertical mouse, ergonomically designed to relieve and prevent carpal tunnel syndrome. Frosted feel, comfortable grip, 10 meters free control, suitable for office games. 1:Item type : Ergonomic Optical Mouse 2:Resolution : 800dpi ;1600dpi ;2400dpi. 3:Button : 6 buttons 4:Maximum operating range: 10m 5:Color : Black/Grey 6:Material : ABS 7:Button life : 5 million times 8:Power supply : 1 x AA 1.5V battery (batteries not included) 9:Voltage/Current: 1.5V/8mA Package Included: 1 x Wireless Mouse 1 x USB Receiver 1 x English User Manual