The Acme Thunderer 477/660 Finger Grip Whistle is perfect for making calls on the run. This easy to blow whistle is recommended for people who are short of breath and has been used to referee elite competitions around the world.
- Recommended to people who are short of breath
- Finger grip whistle, perfect for making calls on the run
- Easy to blow with a consistent sound
- Used to referee F.A cup and World Cup matches