I had to think long time on that clock to it. It also Omega Seamaster Planet Ocean Diver and had been in their sights. Now it has become the Promaster Pilot Watch AS4050-51E. Why? I looked for a clock for everyday life with maximum functionality that is not too much bulk. My customers and clients to focus on me and what I have to tell you, and should not only be on my clock "rigid". The Promaster consists of the best, most durable materials that do not offer the simple, not so brushing models of luxury watch manufacturers most. The accuracy is in the Promaster 15 sec. Per month, which can be more expensive plants with getopt only by Co-Axial technology at the luxury manufacturers, otherwise most of the works will be up to 150 sec. Deviation per month. The Auto. Funk balance of Promaster then makes the accuracy perfect. No more readjusting, !!! including summer / winter time In addition, presents the above Promaster weekday and date, most mechanical movements have only today's date. The EcoDrive the Promaster offers a much higher power reserve, never be able to reach the mechanical. And the AS4050-51E also has a simple alarm function that every now and then is more important for me than the chronograph / stop function. A different local time can be indicated that only the GMT-works offer in mechanical watches which will not have other functions for it. The Promaster has everything. With regard to water tightness the AS4050-51E is water resistant to 200 meters and can be used with diving equipment. However, it is of the features creates a pilot's watch with slide ring (multiplication, division, square root and various ratio calculations), which therefore does not comply with the DIN standard a diver's watch (60 Min Drehlüntte, adjustable diver bracelet for wetsuits, etc.) and therefore officially not allowed to be touted as a diving watch. In our world, everything is precisely regulated to the designation as a diving watch. Consequently, scuba diving in the operation manual must not be specified. The clock is, however, after consultation with the manufacturer definitely up to 200m water resistant and because also eliminates any warranty. Of course, the clock should be serviced regularly (depending on use every 1 to 3 years), so that the seals seal really reliable. So if on the DIN standard attaches great importance, a clock must then so choose, a pilot's watch will never meet this standard. For me it is crucial that it is really waterproof, because we are in the summer a lot on the waterfront, on the road and I do not want to have to take the clock. When processing could be better: The second hand really differs with me only on closer inspection minimally from the bars on the dial from, agree any other pointer, the crown is not screwed (which the water tightness nothing dismisses), the bracelet could be the Did be a bit more rounded. In an exhibit at the jeweler there was even a fine degree, in my not now. And Gehäüse pushes on bracelet approach the first members a minimum mark on where the first terms are likely to affect the housing. Apparently the housing Knew there is not defused. But this is only minimal, barely visible. Therefore, only 4 star ... Well, when you get the price looks in relation to all the features, there is no better choice. And then also made of titanium, which does not offer most models of mechanical watches. They are usually quite sensitive and must be protected and maintained. But I want to have a clock to bear that is not at home in the cupboard, and without concern for sensitivities, regardless of the situation. However, it is pertinent to question whether you should really compare such a high-tech clock with a classic (vintage). I rather think not, when do you do that cars also do not.