Ergonomically Designed Cordless Optical Mouse with Rpet Mousemat. Dpi Button Included & Battery Power Supply: 1xaa Not Included. with Plug & Play System, No Installation Required. Presented in an Attractive Kraft Design Box. Rpet Material is Made From Recycled Plastic, Thus Promoting the Reuse of Plastic Waste & Helping the Sustainability of the Planet. Wireless. Optical. Dpi Button. 1 Battery Aa Not Included. Colours: Grey. Minimum Quantity: 25.