Authentic US Navy “Submarine Dive Sound” Accusonic Horn Alarm IC/H8S4. This unique collectible is in excellent working condition; shop tested (using 115 volts AC household power) and produces that remarkable super loud Arooga… It’s a very hard to find original that would make a great gift for a Sub Sailor. The item “Authentic US Navy Submarine Dive Sound Accusonic Horn Alarm IC/H8S4″ is in sale since Tuesday, January 31, 2017. This item is in the category “Collectibles\Transportation\Boats & Ships\Military\Other Naval Collectibles”. The seller is “alwaystheresa” and is located in El Cajon, California. This item can be shipped to United States.