Features:_x000D_1. Ergonomically designed optical tracking technology that works on many different surfaces and is ideal for home, office or gaming._x000D_2. Plug and play mode, no driver required._x000D_3. When using the mouse, the body design will make your wrist comfortable._x000D_4. It's very suitable for game enthusiasts, programmers, office workers, surfing teenagers._x000D_5. This vertical optical mouse with ergonomic design, through comfortable little finger and thumb support and contoured palm support, seamless, healthy and efficient to ease the tension of the wrist._x000D_6. System support for Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 98, Mac OS, Windows ME, Windows 8._x000D__x000D_Specification:_x000D_Type: left hand wired vertical mouse_x000D_Number of buttons: 6_x000D_Optical resolution: 1600dpi_x000D_Interface: USB_x000D_Adjustable resolution: third gear (800-1200-1600)_x000D_Whether to support ergonomics: support_x000D_Size: about 125*75*62mm/ 4.92*2.95*2.44in_x000D__x000D_Package List:_x000D_1*Mouse 1Ergonomically designed optical tracking technology that works on many different surfaces and is ideal for home, office or gaming. 2 Plug and play mode, no driver required. 3When using the mouse, the body design will make your wrist comfortable. 4It's very suitable for game enthusiasts, programmers, office workers, surfing teenagers. 5This vertical optical mouse with ergonomic design, through comfortable little finger and thumb support and contoured palm support, seamless, healthy and efficient to ease the tension of the wrist.