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[High-quality ABS+metal material] Comfortable grip, durable, smooth surface, no burrs and no deformation, light and strong, anti-aging, waterproof, stain-resistant and wear-resistant, and does not fade.
[High decibel volume]Using the design of dolphin biological principle, the high frequency and high decibel penetrating power is strong, making the whistle more clear and loud.
[Sweat-proof lanyard] Original anti-sweat lanyard, easy to carry, prevent loss, compact and exquisite.
[Packaging design] Exquisite storage box with whistle, the size is light to carry, and it is just right to store the whistle and whistle rope.
[Teeth guard design]Original mouth guard, anti-dust.