Portable Perman 2.4GHz Wireless 3 Buttons Optical Gaming Mouse Mice with USB Receiver for Computer PC Laptop Gamer Gray Size: 95 x 55 x 35 mm (L x W x H) Mouse type: Wireless Optical Mouse. Power Supply: 2 x AAA Battery(Not included). Portable and weight light, very convenient to carry and store. Wireless transmission, the longest sensing distance up to 10-15 meters. Interface: USB. Mini adapter Plug and play. Up to 10 meters of operating distance.