

Acme 660 is possibly the biggest selling whistle of all time. Features a high quality cork pea, easy to blow, small, high pitch 117dBA and loud. Moulded plastic finger grip.
Small chamber size produces a higher pitch and is designed for sports were the players are at a close distance from the umpire, and background noise may interfere with the sound. Has a genuine cork pea and plastic finger grip attachment. Sound is created with Acme's famous low blowing pressure designs