Approved by the International Regulations for the Safety of Life at Sea. Used by mountain rescue teams, the official whistle of the Ramblers Organization in England.

"THE LITTLE WHISTLE WITH THE BIG SOUND"

• Very popular in all sports, especially basketball and volleyball.
• Also chosen by many soccer referees.
• Regularly used in indoor stadiums when the noise from the crowd creates a wall of sound.

Blow Effort: Moderate

Sound Intensity: Very high

Sound Pitch: High