Technical specifications: -transmission distance of approximately 10 meters -carrier frequency: 2402mhz-2480mhz -working channel: 256 automatic frequency hops -rated current voltage: 8-13ma 1.5v-3v -button strength: 60-70 10g -number of button life: 500 million Product characteristics: -ergonomic design, fashion appearance, comfortable feel. -professional optical positioning technology, positioning more accurate. -smart mini-acceptor, automatic connection, no cumbersome code matching -up to 1600 million id coding designs to enhance anti-jamming properties of mouse -any 360-meter or more of the operating distance around the use angle -intelligent circuit management design to make mouse more intelligent and power-efficient -resolution 500-1000 dpi fm, enjoy your wireless free space