DescriptionEasier to use than traditional whistles, this brass whistle makes iteasy to blow a loud, crisp sound every time, even if you're a little outof breath. Great for and referees alike, the demonstrative shrill cutsthrough crowd noise and player chatter with ease. It can also be used inoutdoors activities as emergency whistles.Features- Color: Golden- Material: Brass- Size: About 5.00X1.00X1.00cm/1.97X0.39X0.39inch- The sound is loud and crisp, you can quickly catch the crowds' attention anytime you want.- After polishing, through advanced pickling process, it can effectively protect the sentinel body, not easy to scratch, and anti-oxidation.- Premium brass material, safe, durable and sturdy to use. You can use it with confidence.-Can also be buckled in the backpack to buckle any ribbon, is the choiceof outdoor sports equipment..- Thesewhistles are great for referees, training, teachers, survival,emergency, school, gym, etc., also suitable for people of any age.