2-Channel high pitched Whistle, for Coaches and Referees, Outdoor Rescue, Retro Modeling and high Volume Outdoor Equipment

【Loud Sound】Double tube design with no cork ball inside makes the sound loud and stable. The volume near the exhaust port (within 10cm) can reach 130+dB.
【High Durability】The whistle is made of brass material with corrosion-resistant electroplating technology and has no moving parts inside, which makes it very durable and works well in most environments.
【Attractive Appearance】Benefiting from exquisite electroplating, every whistle has a smooth surface and sophisticated appearance.
【Excellent portability】 Small and lightweight, it is convenient to put in your hand or pocket, or attach a neck strap and hang it around your neck.
It can be used for sports games and emergencies. Perfect for coastal lifeguards, sports referees, coaches, teachers, leaders, campers, and anyone who might need attention.

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