Diver Dennis
Contributor
Could this be the one from ScubaToys? It is inflated orally.
http://www.scubatoys.com/store/Scuba_Acc_signal.asp
AquaLung makes one that attaches to the BC.
http://www.aqualung.com/products/sos.html
http://www.scubatoys.com/store/Scuba_Acc_signal.asp
AquaLung makes one that attaches to the BC.
http://www.aqualung.com/products/sos.html