Electronic Pocket Whistle
Just push the button and you’ll easily activate a loud 120db whistle for as long as you wish. This whistle is ideal for use in sporting events, a locator in emergencies (earthquakes, collapsed buildings), referee whistle, traffic whistle for police, military training, dog handling and crime prevention. It is a compact 4 inches long and made of durable metal.
The whistle requires 4 LR44 batteries (included).