Feature:
Type: Double Tube Whistle
Color: Silver
Material: 304 Stainless Steel
Size: 19.5x56mm
Thickness: 7mm
Weight: 20g
Volume: Up to 120 Decibel
Quantity: 1pc
Made from food grade stainless steel, simple and special design, exquisite craft, smooth surface, anti-rust, never fade, sturdy and durable.
High Decible: Double tube design, chord resonance tone, easy to blow with loud voice, up to 120 dB high frequency, the volume of double tube whistle sounds greater than blowing 2 whistles at the same time.
Purpose: A good item for SOS, self-defense, competition etc. Mini size, light weight, convenient to carry. No bead inside, can be blew even in the water.
Application: Suitable for wilderness survival, outdoor sports, camping, hunting, training, physical exercise, life-saving, women's self-defense and so on.