This watch is also known as:
A1739010-C666-894A , A1739010-C6-894A , A1739010.C666.894A .
Updated version "Steelfish X-Plus" Slightly larger Dimensions & more Water Resistant.
A Professional Divers Watch with an unbeleivable water resistance up to 6,000 feet! Luminous Hands & Hour Markers, Helium Escape Valve on the edge of the case, Date Displayed at the 3 o'clock position.