ACME 447 Thunderer Official Referee Whistle

J Hudson & Co was founded in the 1870s in Birmingham by Joseph Hudson (1848–1930) and his brother James Hudson (1850–1889). The company became a manufacturer of whistles and continues as Acme Whistles. Acme is the world's largest and most famous producer of whistles.

✅ Finger grip for convenient making calls while on the run;

✅ Easy to blow with consistent sound, perfect for people who are short of breath;

✅ Compact & lightweight, could be easily carry in pocket or bag;

✅ Made of sturdy & durable ABS resin;

✅ Included metal O-ring for convenient attach to lanyard;

✅ Chosen by officials in sports, teaching, animal training, police authorities, military units and music specialists.

✓ Loudness : 117 dB

✓ Material : ABS Resin

✓ Weight : 6 grams

✓ Measurement : 5 x 2 x 1.5 cm

✓ Country of manufacture : United Kingdom

1 x ACME 477/660 whistle