Type: Whistle Price not negotiable. Authentic product. Limited color. 3,000 units. The cellophane tape on the back of the package has discolored due to long-term storage. ■Features 1. Strong, thick, and sharp high-pitched sound. The sound reaches players reliably even amidst the cheers of a packed indoor arena. Specifically tuned for basketball. 2. High-strength mouthpiece that is resistant to cracking. The mouthpiece is made of durable plastic and has a vertical wall structure that resists crushing, improving its strength. This is designed for basketball referees who need to keep the whistle in their mouth while running. ● Primarily used for instant judgment by referees in various sports such as basketball. The large fins protruding from the mouthpiece create a sharp, quick sound. One whistle. Retail price. Molten molten training equipment/sports equipment whistle.