Description Easier to use than traditional whistles, crisp sound every time, even if you're a little out of breath. Great for and referees alike, the demonstrative shrill cuts through crowd noise and player chatter with ease. It can also be used in outdoors activities as emergency whistles. Features -Color: Golden.-Material: Brass.-Size: About4.50X1.00X1.00cm/ 1.77X0.39X0.39inch.-The sound is loud and crisp, you can quickly catch the crowds' attention anytime you want.-Each whistle comes with a hole, you can put easily around your neck, or hung on keychain, helps you free your hand.-These whistles are great for referees, training, teachers, survival, emergency, school, gym, etc, also suitable for people of any age.-Mini shaped design, delicate and adorable, it is also a lovely and delicate pendant for you.-Lightweight, portable, easy to carry and use, it can bring you great convenience. Packing list: 1 x whistle pendant