Name: high frequency double tube survival whistle
Material: aluminum alloy material
Weight: about 12g
Color: silver, gold

Packaging: opp bag independent packaging

Peak volume: about 120dB
Surface treatment: oxidation + sandblasting
Specification: length 55mm× width 15mm× thickness 8mm

【 characteristics 】
1, lightweight, and equipped with a key chain, easy to carry;
2. Larger caliber, louder whistle, necessary outdoor mayday supplies;
3, aluminum alloy material, the surface adopts anodic oxidation technology to color, do not fade, longer service life.

Survival outpost range:
The survival whistle does not have to be used in times of danger, such as to say hello to the front and back, to determine the approximate distance, to determine the direction of the sound source, etc. There exist a problem, but it is sometimes just when climbing mountains rise to blow the whistle, blow too much, you also don't think what, also don't want to hear wind, go their own, then who once feet twisted, or where you need help, or pull far among new donkey met don't know how to go, blowing his whistle when no one response is very anxious, because other people also think that nothing had happened to him, his busy silently hard grind, not a lot of time to take a reason, like the story of the Wolf.