Survival whistle approved by S.O.L.A.S (International Convention for the Safety of Life at Sea). Whistles with half the effort/lung pressure, making it ideal for children, the elderly, or anyone with respiratory problems. It is unbreakable and unaffected by water and bad weather conditions. Strong and long-range, it is used by NATO in military exercises.

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

Whistling Effort: Minimal. Sound Intensity: Medium. Sound Tonality: Very deep.