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✔ Secure stainless steel wire gates with a slide-to-lock (carabiner) or twist-to-lock (S-Biner MicroLocks) feature
✔ Waterproof : IPX6
✔ Weight : 152 grams (including battery & headband)
✅ Breathable headband with reflective strips for better night visibility
ACME Metropolitan Police Whistle - Available in Nickel Plated / Polished Brass Material:Polised Brass ✔ Secure stainless steel wireACME'S BACKGROUND: J Hudson & amp; Co was founded in the 1870s in Birmingham by Joseph Hudson (1848 1930) and his brother James Hudson (1850 1889). The company become a manufacturer of whistles and continues as Acme Whistles. Acme is the world's largest and most famous producer of whistles. KEY FEATURES: Official police whistle developed by ACME Whistles in Year 1883 for Scotland Yard & amp; Metropolitan Police. This whistle was used extensively