IST's Compact Short Underwater Noise Maker emplays a unique, practical technology favored by divers, dive masters and scuba instructors worldwide.
With just a simple shake you can send sound up to 100 feet (2.5m) to easily get your dive buddy's attention. Unlike simple "rattling" devices, the Short Underwater Noise Maker is unique and can stay silent while diving, swimming and when stowed in dive gear or luggage; it only works when you want it to.
This dependable, virtually indestructible device is constructed from high impact, high strength stainless steel to assure you years of maintenance-free use. IST’s Underwater Signaling Device is compact, measuring only 6 inches (15 cm); it will fit easily into your BCD pocket, making it conveniently handy when you need it.
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