Double-tube design, light blows, decibels up to 150
2. Made of immortal steel for safe and secure use
3. The circular hole design allows the external gas to flow smoothly, thus expanding the decibels, allowing you to have more gas fields.
4. Compact and lightweight, easy to carry
5. Wide range of applications: for referees, coaches, lifeguards, training, self-defense, school sports, competitions, emergencies or anyone who needs a safety whistle.
Product Name: Whistle
Material: Stainless steel
GUYUEXUAN Whistle Multi-function Outdoor Survival Whistle Emergency Rescue Whistle Double Lumen High Frequency Whistle - B07Y14NF69