A question for water lovers

4733 Views 10 Replies 7 Participants Last post by  carlscutt
Hi everyone,

I was doing some searching through the forum for info on using one's SMP for water activities. Now I know it's a dive watch, but last year I had to have mine overhauled :sad: because there were spots on the underside of the crystal. They were faint, but similar in appearance to water spots you might get on your windshield. There was no rust in the movement or anywhere else, so I have no idea how it could have happened.

These days I may swim or snorkel with my SMP but I'm still a bit skittish. Years ago when I used to dive I had a Seiko auto and never had a problem, even at 100+ feet down. I have read that swimming might be bad due to the pressure created by the hand entering the water with force. How tightly do you guys screw down your crown/helium valve? Again, any thoughts or advice is much appreciated.
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hello there Mr BlueH


the He valve and the crown should be firmly "snug".

I would not tighten them as tight as you can, just snug.

over tightening can cause problems for sure but one suggestion after
a question, do you have a friendly local watchmaker?

I do and 2 or 3 times a year (not necessary) I take the watches I'm about to dive with and have him water test them, or sometimes called pressure testing. this will verify the water resistancy before you get them in water and possibly in trouble. my guy will sometime let me test my own with his equipment, otherwise he charges $5 or so per watch to test, we've not ever found a problem..

also be careful with getting the watch really hot in direct sunshine then abruptly jumping into really cool water... that is something to be careful of.

with a properly maintained and sealed watch swimming should not be a problem with a 300m depth rated watch, no worries... pressure test once a year and snug the crown ( I have never touched the He valve) and you should be fine.

have a good week ahead,:thumbup:

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