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Si es que he escogido un buen maestro...no tenia ni idea de ese sistema de fortis...ya me podias haber dicho algo el otro dia cuando estaba indeciso[emoji35] pero aun estoy a tiempo[emoji41]Pues te pierdes un sistema de estanqueidad innovador.
The first watch that came only with the push pull crown was the Marinemaster (ref. number 647.10.41 / case back number 647.10.158.3) - introduced to the market in summer 2006.
Water resistance (20 bar or 200 m) is not affected by this crown. Back in October 2006 the German watches magazine "Uhrenmagazin" did a test on divers watches, including the B-42 Marinemaster (an English translated version of the this test was published in "WatchTime", sometime in 2008). The test was done according to the ISO 6425 diver watch standards, these require for the water resistance test the watch submerged in water at 125% of the rated pressure, duration 60 minutes - 25 bar (250 m) in case of the Fortis. The watch must continue running without noticeable rate change, not water intrusion is allowed.
This test has been hotly discussed, because initially a Breitling SO Steelfish XL (imploded crystal) and a Doxa Sub 750T Pro (stopped running) failed during the pressure tests (additional tested samples held). Nobody whined about the Mido that also failed (completely - 2 samples failed, stopped running even before reaching the rated depth)....
The Fortis Marinemaster went through the test without any issues, though the testers first were curious about the push pull crown as well. In fact, finally the only thing criticized on the Fortis was the missing divers extension on the rubber strap clasp (the tested watch had a rubber band). Though there has been no specific rating, the Fortis clearly won the "below EUR 1000.-" category. And (just my opinion) had they bought the Fortis on the bracelet with divers extension (above EUR 1000.-), she would have blasted away (nearly) all the more expensive watches, because the Fortis Marinemaster and the Sinn U2 were the only 2 watches in the test matching all criteria of the ISO 6425 standard (including the readability, bezel markings and other criteria) without any failure during the tests. Considering all watches in the test and the results, the Fortis was clearly no. 1 together with the Sinn U2.
(siento no poder poner enlace o decir quien es el autor, pero la cita la cogí de otro sitio donde citaban sin decir quien es dicho autor)
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