Re: Seiko 7S26
- From: "John S." <hjsjms@xxxxxx>
- Date: 27 Sep 2005 05:09:43 -0700
Tony Stanford wrote:
> In message <HtidnYDMT4zpyqXeRVn-gw@xxxxxxxxxxx>, Jack Denver
> <nunuvyer@xxxxxxxxxxxx> writes
> >I have seen various versions of this table but this one is about right:
> Yes, I've seen this kind of table, too. Seems sensible. But I still
> don't understand why my 100m non-divers' slim Seiko 100m quartz is not
> suitable for diving, while my 100m Quartz divers' watch is, according to
> >However, there does not seem to be universal agreement - always follow the
> >manufacturers instructions when in doubt.
> Absolutely. A swimming pool is my max. exposure, and I wouldn't risk my
> 100m slim, non-screw-down-crown, non-divers' Seiko in it... but...
> >Do keep in mind that regardless of depth rating it is best to avoid showers
> >(with their gasket destroying soap and shampoo) and whirlpools/saunas/ etc.
> >because of their temperature extremes. If the watch is exposed to salt
> >water, rinse it with clean water afterward. And in watches with a screw
> >down crown, not remembering to screw the crown down (firmly but not so firm
> >that you cut the gasket to shreds) negates the water resistance even if the
> >watch is rated to a zillion meters.
> ... I have a 10 ukp Casio digital rated at 50m. I undo the screws in the
> back and put in a new battery every five years. It has a plastic-type
> gasket. I wear it in the gym, swim with it to the bottom of a 12ft pool.
> Take hot showers, hot baths, deluge it with shampoo, soap. And it has
> three buttons as opposed to 1 crown, that should be weak spots for
> leaking. Don't care. 10 UKP?
> But it never, ever, ever leaks, fogs or goes wrong! Same for the last
> one I had. I replaced it when I trod on it accidentally.
> Tony Stanford
There is an excellent article on TimeZone about static vs dymanic
pressure testing. Unfortunately their forums are down but I will post
it once they come back up.
>>From an old post on SCWF:
First off I know of very few scuba divers who wear a dive watch. We
almost all wear dive computers, not a dive watch. The dive computers
tell you much more than
just time. Things like depth, ascent rate, bottom time,decompression
stops etc. Also I wear my non-dive
(15BAR 150m) non-screw down crown Seiko chrono's all the time while
showering and swimming. Water resistance is a matter of design, not
just wheather it has a screw down crown and case back and looks like a
Rolex Sub. Heck I know of lots of screw down crown/case back Seiko
divers that are only rated to 70m (1/2 what my non screw down crown
chrono's are). I for one also will not buy a watch I can not shower or
swim with, but I am certainly not limited in my choice to only diver
screw down crown watches. Just didn't want people to think they needed
a screw down crown dive watch to wear in shower or swimming.
You should check the rating level of your Seiko watch as follows to
determine its suitability for exposure to water:
Water-resistant to 30 meters (100 feet). Will withstand splashes of
water or rain but should not be worn while swimming or diving.
Water-tested to 50 meters (165 feet). Suitable for showering or
swimming in shallow water.
Water-tested to 100 meters (330 feet). Suitable for swimming and
Water-tested to 150 meters (500 feet). Suitable for snorkeling.
Water-tested to 200 meters (660 feet). Suitable for skin diving.
Diver's 150 meters (500 feet). Meets ISO standards and is suitable for
Diver's 200 meters (660 feet). Meets ISO standards and is suitable for
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