Robiear Professional Portable 2.4G Wireless Optical Mouse Mice For Computer PC Laptop Gamer Power Supply: 2 x AAA Battery(Not included) Size:95*54*30mm Wireless transmission, the longest sensing distance up to 10-15 meters With 6 Keys, including Scroll Wheel, Page Forward and Page Backward buttons for easy Internet Surfing Package Content: 1 X Gaming Mouse(without retail package).