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Seiko Prospex Automatic Baby Tuna SRP637

Seiko Prospex Automatic Baby Tuna SRP637


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$431.25 (You save $143.75)
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  • Product Description

    Seiko Prospex Automatic Baby Tuna SRP637


    Stainless Steel Case and Band
    Rotating Bezel
    Hardlex Glass
    Screw Case Back
    Screw-down Crown
    Case diameter 46.5 mm
    200M Diver

    Hand-winding capability
    Power reserve: Approximately 41 hours
    21,600 vibrations per hour
    24 jewels

  • Product Reviews


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    1. Fantastic diver with enormous value

      I bought it from Arizona Fine Time on monday and it arrived at my door in Norway on thursday (very pleasant buying experience by the way). Absolutely love it, such a cool and no-nonsense watch that feels incredibly solid on the wrist.

      I was worried that the size of 46,5mm would be a problem, but I think it both feels and looks perfect on my wrist. Granted, I'm 190cm and can manage a bigger watch, but it honestly wears a lot smaller than it is. In fact, it wears about the same or even smaller than the Omega PO 8500 42mm I had before. This is probably because the dial size is about the same as with the normal monsters, it's just the extra protective shroud that increases the diameter, and it's the dial that draws the eye in most. It also sits much flatter than the PO did, which is nice and makes it seem a lot less "intrusive".

      The level of finishing, detail and feeling of quality is just insane for the price, it's truly impressive how Seiko manages to pack this much punch into a watch costing no more than around 500$. Seiko is just in its own league when it comes to the watchquality/price ratio in my opinion. At 431$ this is a great deal.

      It's also pretty cool that I can get the movement (4r36) to run pretty much exactly +0 seconds a day by regulating it through different resting positions over night. It lost about 10 seconds the first day on the wrist, but "won" it back by resting with the crystal up over night, making it run spot on again. Today it has lost about 5 seconds so far. This means that by regulating it by using different resting positions I can always get it back to roughly the correct time, which is really cool. Quite a nifty way to make a relatively inaccurate movement run accurate. I like it, it makes the day to day watch life feel more involved and makes the watch feel more alive.

      Great to know that this movement and these watches are built like tanks, and will easily last a lifetime if serviced regularly. A true diver that will be on my wrist a lot!
      on 23rd Feb 2015

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