J Super-Loud Treble Dolphin Whistle
Ultra-high-frequency sound design ensures piercing loudness (120dB), ideal for long-distance signaling in sports fields, emergency drills, and outdoor activities. Precision-molded ABS plastic body with polished chrome plating resists corrosion, water, and extreme temperatures (-20°C to 60°C). Ergonomic mouthpiece with anti-slip grooves provides secure grip and comfortable use during prolonged coaching, refereeing, or crowd control. Compact military-grade construction (6.5cm) fits keychains or pockets, widely used by coaches, referees, kindergarten teachers, and security personnel. Multi-scenario application: football matches, basketball games, marine sports, hiking safety alerts, and police/army training drills. Factory-direct wholesale pricing with bulk discounts available for schools, sports clubs, and uniformed services.