Electronic Whistle Introduction:
The electronic whistle operates with a push of a button instead of blowing like a traditional whistle. 125db which make great noice from normal whistle. Point the whistle toward the target area and press the button.
Just press the button down as long as you need it to make noise. And you won't run out of breath from doing so!
This electronic whistle has many uses including lifeguards, referees, umpires, tour guides, sport trainers, cheerleaders, traffic cops, police, military training, dog handlers, or even as an emergency locator (earthquakes, collapsed buildings.)
Including sling for easy carry.
Battery type: use 3pcs of AAA batteries
Rechargeable,using 1pcs 3.7V 2000mAh Li-battery
Rechargeable type including one USB charger
Warning light also available for higher warning effective.