Ergonomic design, soft and round, fit the shape of the hand, comfortable hand feeling, not tired hands after long time use Three gears of 800-1200-1600DPI, suitable for various fields, play wirelessly! With scale non-slip scroll wheel, it is sensitive when flipping and clicking accurately Insert the computer USB interface, plug and play, play wirelessly, and control experience 4G wireless stable transmission does not drop the line, get rid of wire troubles, and the transmission is reliable