120db rechargeable electronic whistle with two panttern sound

120db rechargeable electronic whistle with three pantern sound

The electronic whistle operates with a push of a button instead of blowing like a traditional whistle. This electronic whistle has many uses including lifeguards, referees, tour guides, sport trainers, traffic cops, police, military training, emergency rescue and others. Three mode sound can easy switch to fit for different situation.Slide Switch to middle place, then press round button for hurried short blast.Slide Switch to head place, then press round button for long blast sound.Slide Switch to tail place, then press round button for hurried long blast sound. Rechargeable lithium battery more economic and environmental protection.The weight is 65g,very easy to carry.And the working time is more than 2 hours.