Features :
Dual-band design. Left and right sides of the cavity sounding different size, while generating high-frequency sound, to ensure that the different environments, under conditions with excellent penetration.
Anti-off whistle mouth design. Hand can not, do not worry mouth latch onto airflow whistle blowing out.
Design is in place for a survival whistle.
After testing, the performance is very outstanding strongly recommend!
Specification :
Dimensions: Length: 7.2cm wide: 4.5cm, Clip wide: 2cm
Color: Orange, Black
Package includeds :
2 x Dual band Survival Whistle
