Advantage
Camping signal whistles are more durable compared to plastic whistles.
2 whistles, one to carry with you, and one to put in your backpack in case of emergency.
Side double-cut design, making the air vibration more high-frequency, the sound is more magnificent and spread farther.

Specification:
Product Name: emergency whistle keychain
Size:55*15*8MM
Color: Black, silver
Application: Outdoor Camping, Hiking, Boating, Hunting, Fishing, Kayaking, Surfing.

Universal whistle language:
Short tone: within 1 second.
Long tones: more than 3 seconds.
Intra-command whistle interval of 2 to 3 seconds.
interval of 30 seconds or more between instructions (e.g. repeated sending of instructions requires an interval of 30 seconds or more)

2 short and 1 long: gather in the direction of the whistle.
1 short and 1 long: departure and acceleration.
1 short and 2 long: someone falls out of line, the front team waits for the back team.
3 short: encounter difficulties to seek help.

Package include:
2* Outdoor whistle
2* Keychain with black lanyard

After Sales:
-- If you have any dissatisfaction, please let us know and we will try our best to solve it for you.