Ultra-Loud Electronic Whistle with Charging Function
High-decibel sound output ensures clear, piercing signals up to 120dB, ideal for long-distance communication in noisy environments. Durable ABS plastic construction with reinforced airflow design for consistent performance in extreme outdoor conditions. Rechargeable lithium battery (USB-C charging) provides 50+ hours of continuous use, eliminating disposable battery waste. Precision-engineered airflow chamber delivers crisp, distortion-free tones for sports refereeing, coaching, or emergency signaling. Compact, lightweight design (45g) with lanyard hole for easy portability during hiking, cycling, or crowd control. Water-resistant IPX4 rating withstands rain and sweat, suitable for marine, traffic, or pet training applications.