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The Bookman Bike Whistle is a collaboration with the world famous whistle manufacturer Acme Whistles, established in 1870 in Birmingham, England. It has been developed especially for the cyclist’s safety and convenience.

The technology is based on Acme’s Tornado whistle, engineered through the principle of wave interference – meaning it can produce a high pitched, high volume sound without the need for any moving parts. The shape of the whistle also prevents it from being pushed into the wearer’s mouth in case of a fall. The nylon neckband comes tied with a safety break free knot. It sits securely around your neck but if you pull it off with a quick snap, the knot will break.

The bike whistle is easy to operate. Blow softly for a gentle alert or hard for a loud warning. Keep it around your neck at all times and leave it resting on your lip when traveling through a particularly busy area. That way you can instantly give warning without letting your hands of the handlebar. The whistles are made in the Acme plant in Birmingham UK, just as they have been since the late nineteenth century.

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