Portless nuclear basketball competition training treble whistle features precision-molded ABS construction with reinforced airflow channels for crisp, far-reaching sound projection. The triple-frequency acoustic chamber delivers distinct pitch variations ideal for court-level officiating and complex drill coordination.

Ultra-lightweight ergonomic design (32g) incorporates a moisture-resistant lip plate and anti-microbial silicone mouthpiece, ensuring hygiene during intense tournaments or prolonged outdoor training sessions. The integrated lanyard loop withstands 50kg pull force for secure attachment to referee uniforms or gear belts.

Professional-grade durability meets MIL-STD-810G vibration standards, performing flawlessly in humid gymnasiums (-20°C to 60°C operational range). Essential for FIBA-certified referees, collegiate coaches, and youth league organizers requiring reliable auditory signals in noisy arenas.

Whistle produces 125dB output at 2m distance with three selectable tones (2.8kHz/3.5kHz/4.2kHz) for play stoppage, foul calls, and time management. CNC-machined internal components eliminate air leaks, achieving 30% louder output than standard pea whistles while requiring 20% less exertion.

Bulk packaging available for athletic departments and sports federations - each unit arrives with OEM-grade protective sleeve and pre-game tuning instructions. Compatible with FIFA, NBA, and NCAA regulation requirements for tournament-grade officiating equipment.