## Design Concept This whistle is designed with an ergonomic and compact shape, making it comfortable to hold and easy to blow. The clean lines and simple design ensure optimal functionality while maintaining an appealing look. ## Use Perfect for sports referees, coaches, lifeguards, or anyone in need of a reliable signaling whistle. It can also be used for personal safety when out in the wilderness or urban areas. ## Printing Tips Print the whistle with a resolution of 0.1 mm for a smooth finish and strong ABS or PLA material to withstand frequent use. Ensure that the peal-free design is aligned with good infill to maximize the sound output without obstruction. ## Assembly Instructions No assembly is needed. Ensure that the whistle is properly cleaned and free of dust or any printing debris before the first use to maintain clarity in sound.