Ultra-Precision High-Frequency E-Whistle for Professional Sports Training
Durable ABS construction with reinforced metal core for extreme weather resistance and long-term reliability. Crisp 120dB sound output with adjustable frequency (2.5kHz–3.5kHz) for clear signals in noisy stadiums or outdoor fields. Ergonomic grip design with moisture-wicking coating ensures non-slip control during intense matches or training sessions. Ultra-lightweight (28g) with quick-access lanyard for referees, coaches, or dog trainers requiring rapid deployment. IP54-rated waterproofing withstands rain, sweat, and accidental drops—ideal for soccer, basketball, or pigeon racing. Military-grade spring mechanism guarantees instant response with zero lag, trusted by professional leagues worldwide.