Scope of application: basketball, soccer, volleyball, various sports, mining, ports, construction, transportation, and other broad fields
The butterfly whistle's sound channel design allows for moderate blowing, producing a loud whistle that can completely drown out crowd noise and natural environment noise. The product can be widely used for maintaining order, traffic control, managing situations, rescue operations, survival and rescue calls, entertainment, sports, as well as in mining, ports, construction, and other fields