Coaches Whistles Referee Whistles,Mortun ABS Professional Referee Training Whistle for Referees Coaches Lifeguards Survival Emergency School Football Basketball Volleyball Soccer Hockey(Gold Silver) - TREETDOBV, TREETDOBVicy3bre29w40713-12

• PREMIUM QUALITY: ABS resin material and high polymer material combination, nontoxic and taste less, health and environmental protection. CRISP AND LOUD: Non‑core high frequency, clear and loud, no‑core whistle design, whistle permeability is strong, high frequency and high decibel can be achieved. Double air chamber design, easy to blow, double air chamber professional referee coach whistle, large volume, strong sound penetration. VERY DURABLE: Whistle original mouthpiece, prolong the service life. Durable metal ring buckle, detachable design, convenient and durable. ADJUST NYLON HANGER: H anger easily through the tail hole, double ball fixed hanger length, not afraid of losing, not afraid of falling. WIDE APPLICATIONS: Suitable for referees, coaches, training, instructors, sports, lifeguards, teachers, self-defense, survival, emergency, herding, training bird or dog, etc.