By TLex Longines have updated the HydroConquest for 2013. The most noticeable change comes from the dial, which is now with Arabic numerals for all 11hrs. Its Stainless steel case is available in two sizes 39mm or 41mm. It is fitted with Sapphire crystal with AR-coating. Its water-resistance is 300 meters.
There are three movements types available; all are ETA base: the Longines calibers L263.2, L115.2, which are Quartz or an automatic Longines caliber L619.2, based on an ETA 2892-A2 with 21 jewels, 28,800 vph and a power-reserve of 42 hours.
The new dials are available in blue, cream or black with Arabic numerals. They come with either black blue or red bezels. I'm not sure what material the insert is. The watch comes with either a solid steel bracelet or a black rubber divers strap with a security folding clasp.
Really not sure why Longines decided to make the HydroConquest a dressier diver rather than a sportier diver. I would have ditched the Arabic markers all together, but that's me! ;)