Dilwe Whistle, Sports Whistle for Referees, Training, Sports

The whistle is made of ABS resin, an environmentally friendly material that is resistant to both hot and cold temperatures. It features independent sound holes on both sides, allowing the sound to be transmitted to both sides of the court. The frequency range of the whistle is 0-4000 Hz, which is well within the range of human hearing sensitivity, typically between 1000-4000 Hz. This high-pitched frequency range makes it easy to attract attention, thereby effectively getting the desired response.

The whistle is versatile and can be widely used by referees, teachers, in training, survival, emergency situations, schools, sports, and as giveaways. Its compact size of approximately 49 x 20 x 13 mm (1.9 x 0.8 x 0.5 inches) and adjustable nylon lanyard make it convenient to carry and use. The lanyard can easily pass through the tail hole, and its length is fixed by double balls, ensuring ease of use and portability.

In terms of the package contents, the whistle set includes 1 whistle, 1 lanyard, 1 mouthguard, and 1 storage box. The mouthguard is a useful accessory that helps protect the user's teeth and lips, while the storage box provides a convenient way to keep the whistle and accessories organized and protected.

Overall, this whistle is designed to be an efficient and reliable tool for a wide range of applications, from sports and outdoor activities to emergency situations. Its durable construction, high-frequency range, and ease of use make it a valuable asset for anyone in need of a reliable signaling device.

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