Fox 40 Sonik Blast Whistle
- Precise whistle chamber calibration
- Pure frequency performance
- Less effort / Crisp sound
- Four sound-producing resonators
- The most efficient whistle in its class
- Patented pealess whistle
- Extremely easy to blow
- Cannot be over blown
- Carries over large distances
- Sound power: 120dB
- Item # WFS- $7.00 Each
