Ideations New Dive Alert Plus Version 2 Signaling Device - DV1 for All Standard Inflators

Uses chrome-plated brass couplings to attach to your power inflator, Fits All Standard Inflators, Uses a small amount of air from your SCUBA tank to make a piercingly loud sound (On Surface, or In Water), People have been able to hear a DiveAlert one mile away from diver in need, Dive Safe