Premium Quality: Aluminum Alloy Material, durable.
Light Weight: Only 12g, easy to carry.
Loud Whistle: Double-tube design, 120db, high-frequency.
The whistle has no built-in pea ,so it will not mold and breed bacteria because of the pea.Can be used in rainy days.
Versatility: A good item for outdoor needs, sports referee, emergency.
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