นกหวีดความถี่สูง 130 เดซิเบล สำหรับการแข่งขัน ผู้ตัดสิน ปากจับ

Bullet Points: 1、The shape of the dolphins, the appearance of the streamline, the sound is loud, the selection of high-quality materials, the surface is smooth and round. 2、The high-pitched sound of 130+ decibels is higher than the ambient noise, and the whistle sounds crisp, bright, and penetrating. 3、Comes with a comfortable padded mouth clip. 4、Outdoor, emergency, safe, survival whistle. 5、Multi-purpose: sports, hockey, volleyball, basketball, football, cross-country, racing, water sports, lifeguards, swimming, marine and maritime safety, outdoor, hiking, hunting, camping, survival, emergency, animal deterrence, dog training. Information: Product Name: Whistle Material: environmentally friendly ABS material Size: about 6*2.5*1.5cm/2.36*0.98*0.59in Sound level: 130 decibels List: Whistle *1 (rope*1, storage box*1, padded mouth clip*1 )