Feature

●The whistle is specifically designed for life saving so it can produce the loudest sound in the world and is actually used by US Navy and law enforcement agencies throughout the U.S
●The whistle is designed to produce an amazing loud volume with a special structure that saves energy. The volume is 120 decibels. Equivalent to Airplane Engine Sound
●You will receive sound up to 800 meters on land and 15 meters in water. You can hear it and cannot hear it as a border. Extra large volume whistle protects you and your loved one
●Product Size: Approx. 3.1 x 2.0 x 0.9 inches (8 x 5 x 2.2 cm); Weight: 0
●It can be used even on the surface of the water, so it is not only great for outdoor activities such as diving, yachting, boating, kayaking, and can also be used for land activities, emergencies, disasters, and crime prevention


Description

This is a US Navy SEALS and US Coast Guard approved model whistle. The whistle is specifically designed for life saving so it can produce the loudest sound in the world and is actually used by US Navy and law enforcement agencies throughout the U.S. It can be used even on the surface of the water, so it is not only great for outdoor activities such as diving, yachting, boating, kayaking, and can also be used for land activities, emergencies, disasters, and crime prevention. Product Size: Approx. 3.1 x 2.0 x 0.9 inches (8 x 5 x 2.2 cm); Weight: 0.8 oz (22 g); Note: For loud sounds, there are some tricks to blow out. Make sure you feel like breathing from your stomach and resonate well.