Double Whistle

This dual-tone whistle features a support-free, one-piece molding, and its surface has a delicate frosted texture, which is not only anti-slip and wear-resistant but also effectively resists erosion from outdoor environments. Its unique coreless design is a key highlight; the precise internal dual-chamber structure ensures airflow stability, completely solving the pain point of traditional cored whistles jamming or losing sound after exposure to moisture, sand, or intense activity, ensuring pure and consistent sound output In terms of acoustic performance, it boasts an output exceeding 120 decibels. This highly penetrating dual-frequency high-pitched sound can easily cut through noisy environments in large sports venues like football fields and basketball courts, clearly conveying commands even amidst strong winds or crowd cheering. Beyond serving as a professional referee tool, it is also an essential survival gear for outdoor adventures and hiking; its high-frequency signal can quickly alert rescue personnel in emergencies. The ergonomically designed lanyard hole at the tail allows for convenient wearing around the neck or attachment to a backpack, balancing practicality and portability