Years of proprietary research and development have resulted in a one-of-a-kind all-encompassing whistle and fingergrip. Named "The Caul" in honor of the late John McCauley, former NHL Referee and Director of Officiating.
Strong polycarbonate body
Integrated over-mold CMG technology
Dual-chamber pealess technology
Highly-durable yet flexible rubber form-fitting fingergrip
Pealess-style whistle doesn't compromise the traditional harmonized trill tone
Crisp loud sound and extremely easy to blow
Sound Power: 110 dB