Ultra-lightweight aluminum alloy whistle body ensures durability with corrosion-resistant finish for all-weather use.

Precision-engineered pea-less design eliminates internal moving parts, delivering consistent high-pitched sound without jamming.

Military-grade ABS mouthpiece with ergonomic curvature fits comfortably for extended use during matches or training sessions.

Dual-frequency sound projection (125dB) cuts through crowd noise, ideal for basketball courts, soccer fields, and track events.

Stealth matte coating reduces light reflection to avoid distracting athletes during critical gameplay moments.

FDA-approved non-toxic materials safe for direct mouth contact, used by referees, coaches, and PE instructors worldwide.

Compact 50mm size with integrated finger grip allows quick access from pockets or lanyards during fast-paced sports.

Tested for extreme temperatures (-20°C to 60°C) with waterproof O-ring seal for outdoor tournaments in rain or snow.

Micro-threaded air channel technology creates sharp, instant tones with 30% less breath effort than standard whistles.

Includes adjustable breakaway nylon neck strap with quick-release buckle for emergency situations on the field.

Meets FIFA and NCAA acoustic standards for professional-grade performance at youth leagues to collegiate levels.