Leegoal 2.4GHz Foldable Wireless Optical USB Mouse for Laptop PC Precise optical technology;Size:11.8x5.8x3.5cm/4.6x2.2x1.3inch. Foldable wireless optical USB mouse Resolution frequency 1000-1600CPI Works at distance of up to 10 meters (33FT) Leegoal bulk packing with good quality warranty.