Feature: 1. Whistle original mouthpiece, prolong the service life. Durable metal ring buckle, detachable design, convenient and durable. 2. ABS resin material and high polymer material combination, non‑toxic and tasteless, health and environmental protection. 3. Adjustable nylon hanger, hanger easily through the tail hole, double ball fixed hanger length, not afraid of losing, not afraid of falling. 4. Non‑core high frequency, clear and loud, no‑core whistle design, whistle permeability is strong, high frequency and high decibel can be achieved. 5. Double air chamber design, easy to blow, double air chamber professional referee coach whistle, large volume, strong sound penetration. Specification: Item Type: Referee Whistle Material: ABS Resin Weight: Approx.43g/1.5oz . Package List: 1 x Whistle1 x Lanyard2 x Mouthpiece1 x Clip Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.