FOX40 Pearl whistle with string, red. A basic whistle that produces a lower-pitched sound for personal safety and environmental protection. Perfect for situations where a piercing sound isn't required, but will restore harmony and order. Perfect for teachers and coaches, and as a fun accessory for children. It also works well as a coaching whistle, especially in enclosed spaces. The model has a more delicate appearance than the classic whistle and is slightly lighter. Properties: Sound intensity: 90 dB. Ensures good audibility in open sports facilities. Provides very good audibility in closed facilities. Two chambers facing each other. No moving parts. Made of plastic. Whistle color: red. The whistle comes complete with a braided string in a color matching the whistle: Breakaway – an adjustment system with a snap closure at the neck that allows for quick release in case of emergency and an adjustable clamp. The FOX40 is the official whistle of the NBA , NHL , NBL , NCAA , FIBA , FIVB , and other federations. The FOX40 is a ballless whistle with internal channels that produce a very loud sound. It is also used by law enforcement agencies. It is very useful for sailing, windsurfing, mountaineering, and other areas where a loud signal is needed. In the US and Canada, people use it as a safety whistle .;Fox 40 Pearl Whistle Properties: A whistle with a unique sound, made of plastic. Perfectly audible both on the pitch and during outdoor events.