Specification Brand : cardyven BulletPoint1 : WIDE APPLICATIONS: Referee metal whistles are suitable for referees, coaches, training, instructors, sports, lifeguards, teachers, survival, emergency, herding, training bird or dog, etc. Ideal for coaches, referee, official, teacher, and home use. BulletPoint2 : PREMIUM QUALITY: Referee whistle is ABS resin material and high polymer material combination, tasteless, super loud, and is easier to attract attention. After many inspections before leaving the factory, you can use it with confidence BulletPoint3 : ADJUST NYLON HANGER: Sport whistles hanger easily through the tail hole, double ball fixed hanger length, not afraid of losing, not afraid of falling. Mortun abs professional referee training football basketball volleyball sports whistle BulletPoint4 : VERY STURDY: Whistle original mouthpiece, prolong the service life. Metal ring buckle, detachable design, convenient and sturdy. Small in size and light in weight, easy to carry and use, will not take up too much space BulletPoint5 : 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 coaches whistle, large volume, strong sound penetration Color : Gold Silver ItemName : Basketball Whistle, Sport Whistles for Coaches Mortun ABS Professional Referee Training Football Basketball Volleyball Sports Whistle (Gold Silver) ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 12 centimeters ItemPackageDimensions_Width : 7 centimeters ItemTypeKeyword : coach-and-referee-whistles Manufacturer : cardyven ModelName : cardyvenr3goghuws2-12 ModelNumber : cardyvenr3goghuws2-12 PartNumber : cardyvenr3goghuws2-12 ProductDescription : Whistle original mouthpiece, prolong the service life. Metal ring buckle, detachable design, convenient. ABS resin material and high polymer material combination, tasteless. Adjustable nylon hanger, hanger easily through the tail hole, double ball fixed hanger length, not afraid of losing, not afraid of falling. 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 coaches whistle, large volume, strong sound penetration.