1Lithium Battery Charging Model: The presentation clicker is a lithium battery charging model, free drive installation, plug and play, magnetic absorption, convenient to carry 2Ergonomic Design: The presentation clicker is an ergonomic design with a comfortable grip. One charge, the clicker can be used for 90 days, the keys are sensitive and not garbled 3Low Radiation: The presentation clicker has low radiation, and the light is up as soon as it is pressed, which meets the national testing standards 44G High Sensitivity Chip: The presentation clicker has a 4G high sensitivity chip for stable remote control, meeting daily needs 5Simple Operation: Operation is simple and convenient, the presentation clicker can be used without complicated process