This whistle is made of high quality iron materials, with high frequency tone and strong sound penetration. It is suitable for outdoor survival, sports events, referee work and other scenarios. Its environmental design concept and durability make it an essential tool for professionals and enthusiasts.

This whistle Iron high-frequency environmental protection whistle is designed for outdoor survival, referee and various competitions. It is made of high-quality environmental protection materials, with clear and clear sound quality and strong penetration, it is an ideal tool for you to transmit signals in an emergency. Whether it is a sports event or a wild adventure, it is your reliable assistant.

This whistle Iron high frequency environmental protection design is specially designed for outdoor survival, competition ruling and other scenes. With high volume, strong penetration and strong durability, it is a reliable tool for you to transmit signals in emergencies or competitions.