PROTECT YOUR EARS / Headset

People have such kind of experience when using a earplug: when putting on earplug without a way of judging the volume or without a consideration of the volume, people usually get ear drum hurt by large volume. And sometimes, when talking to a man who wears earplug, there will be communication blocks without knowing the volume of his earplug. According to those common but easily neglected issues, a deeper design is carried out on earplug.