Product: New dual -frequency whistle
High -frequency stainless steel whistle referee Wilderness Survival Earthquake Biofoto Spirit Toning
Material: Food -grade stainless steel
Specification: 57*width 18mm in length
Thickness: 9mm
Weight: 24g
Packaging: a single OPP bag, 100 bags, one piece of 2000
High -frequency dual -tube whistle is a good helper for outdoor products. It is small and convenient to connect with customer service or message if it is easy to carry customers.
【Features】
1. Lightweight, and equipped with keychains for easy carrying;
2. The diameter is louder, the whistle is even more loud, and the necessary supplies for outdoor help;
3. Aluminum alloy material, the surface is made of anode oxidation technology, does not fade, and has a longer service life.
Scope of use of survival whistle:
The survival whistle does not have to be used when it is in danger. For example, saying hello to the front and back to determine how far is separated, determine which direction of the other party's sound source, etc.........However, there is a problem in this. Sometimes when climbing the mountain, just the rise and blowing the whistle, and the blow is too much. Everyone doesn't feel anything.The feet are twisted, or where do you need to help, or the new donkey, who is far away in the middle, does not know how to leave when he encounters the intersection. It is very anxious that no one responds to when blowing a whistle.Busy and hard -working, there is not much effort to take care of it, like the story of the wolf coming.