Professional referee whistle to put on the finger
Comfortable ring adjustable to the finger
Easy to blow without sounding too loud
No moving parts that degrade or separate
The sound emitted by this whistle overlaps background noise
Audible from more than 1500m away
Comfortable ring adjustable to the finger
Easy to blow without sounding too loud
No moving parts that degrade or separate
The sound emitted by this whistle overlaps background noise
Audible from more than 1500m away
