You can hear the voice loud from a distance.
It is very useful in survival emergencies.
For outdoor activities such as camping, fishing, hiking, climbing, walking and so on.
Specifications:
Stainless Steel 2 Tube Whistle:
Material: Food Grade Stainless Steel
Size: 2.24in * 0.7in * 0.31in
Weight: 0.8oz/pcs
Color: Silver, Gray
Aluminum Whistle:
Material: High quality aluminum alloy
Size: 2.75in * 0.27in
Weight: 0.2oz / pc
Color: Green, Blue
Package Includes:
2 x Stainless Steel 2 Tube Whistles (Silver & Grey)
2 x Aluminum Whistles (Silver & Gray)