It is very suitable for outdoor communication in survival situations. You can hang it on the key chain or hang out. Waterproof and can be used in dry conditions. Lifetime warranty, providing a thick emergency whistle for your life-saving kit.
Material: Stainless steel
Size: 7*1cm
Volume: 129+db
Frequency: 3500Hz
Material: Stainless steel
Size: 7*1cm
Volume: 129+db
Frequency: 3500Hz