Name: whistle, referee whistle, outdoor whistle
material: Iron

process: surface electroplating of whistle

specification: whistle long 66mm
lanyard: Nylon

applicable:
1. Help-suitable for wild exploration, women, lonely travelers, children, and sea rescue
2. Command-security, vehicle scheduling management, etc.
3. Outdoor contact-(go out for traveling with a companion, one person, encode the flute in advance, and then contact at a long distance), suitable for outdoor sports
4. Competitive competition-suitable for all kinds of sports competitions for judges

features:

strong and durable, unique loud sound (double-tone whistle), how much your lung capacity is, how loud the sound can be, lanyard type, high strength, easy to carry, avoid loss, can be worn into other items such as keys.