Description The whistle is made of good quality materials, and with hanging circle. This whistle has crisp sound, which is suitable for referees, coaches, training, instructors, sports, teachers, lifeguards, self-defense, survival, emergency, herding, training bird or dog, etc. Features -Color: Silver. -Material: Stainless Steel. -Size: About 7.80X2.00X2.00cm/ 3.07X0.79X0.79in. - Professional and practical whistle for referee and school athletic meetings. - Classic appearance design, designed for instructor, trainers, and athletes well. - High-class material guarantee long service time, enjoy your own tempo and honor. - Suitable for racing, running, horse racing, swimming, exercising, competition, etc. - Can be the perfect gift for your friends who are the referees or instructors. Professional and practical whistle for referee and school athletic meetings. Classic appearance design, designed for instructor, trainers, and athletes well. High-class material guarantee long service time, enjoy your own tempo and honor. Suitable for racing, running, horse racing, swimming, exercising, competition, etc. Can be the perfect gift for your friends who are the referees or instructors.