samba 3-tone metal whistle.

This small whistle is used by the "Mestre de bateria" (drum band conductor) in Brazilian music.
This model with three different notes helps maintaining the overall tempo, not only by whistling the beat but also through improvised phrasing, warning the percussionists about a coming break or stop.

With its strap, this metal whistle is very convenient and easy to clean.

Loud and medium-pitched, it is particularly efficient in open-air parades.