Features: Ergonomic design, the vertical type mouse fits the palm and fingers, reduces discomfort when using, bid farewell to the "mouse hand". 3 adjustable DPI(800-1200-1600DPI), easy to switch, adapt to a wide range of material surfaces, accurate and reliable position, meet your daily office needs. Powerful optical engine provides accurate click, quick response and stable signal. Exquisite surface treatment, comfortable hand feel. Powered by USB, plug and play, convenient to use. Specification: Type: Vertical mouse Color: Black/White/Pink(optional) Connection mode: USB wired Key number: 6(left/right/roller wheel/DPI/forward/backward) DPI: 800-1200-1600DPI Item size: 10.5 * 7 * 6cm /4.13 * 2.76 * 2.36in Item weight: Approx. 86g /3.03oz Packing list: 1 * Mouse