"Acou-Stick" UnderWater Noise maker updated popular

Patented technology used by divers, Dive Masters, and Scuba Instructors worldwide. Get your dive buddy's attention fast & easily. Just a simple shake sends sound up to 100 feet! No batteries! No maintenance! Unlike simple "rattling" devices, the ACOU-STIK Professional Underwater Communicator stays silent while swimming & when stowed in dive gear or luggage. It only works when you want it to! This virtually indestructible devise is constructed from high-impact high-strength structural polymer for years of maintenance free use. Acou-Stick is compact at only 6-inches so it will fit easily in to your BCD pocket making it handy when you need it. Acou-Stick comes equipped with a long 12-inch wrist strap and if you do drop it the high visibility fluorescent-green color will make it easy to locate. Near-neutrally buoyant for ease of carrying and it is proudly made in the USA.