•Clicker and high-frequency whistle 2-in-1 functional design.
•Press the heart switch with your hand and it will make a loud clicking sound. Whistling with your mouth produces high-frequency sounds, all of which have excellent penetrating power. This better ensures that it can be used in different environments.
•It’s effortless to speak out. You must pay attention to conserving your physical strength when seeking survival and help. A good survival whistle must be able to sound easily.