Welcome to our store！</br> 1、Non ‑ core high frequency, clear and resounding, no ‑ core whistle design, strong whistle permeability , high frequency and high decibel can be achieved. 2、Double air chamber design, easy to blow, double air chamber professional referee trainer whistle, large volume, strong sound penetration. 3、Adjustable nylon hanger, hanger easily through the buckle, double ball fixed hanger length, there is unnecessary to afraid of losing and falling. 4、ABS resin material combined with macromolecule materials, non‑toxic and tasteless, healthy environmental protection. 5、The whistle original denture is extended to extend the service life. At the same time, it applies to basketball, football, volleyball and so on . <div class="wang-edit-text"><p class="wang-edit-text"> <p class="wang-edit-text"> Item Type: Whistle Material: ABS Resin Weight: Approx.43g / 1.5oz <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> </div> 1 x Whistle 1 x Lanyard 2 x Teeth Protection 1 x Clamp Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>