WR and screw down crown
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Thread: WR and screw down crown

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  1. #1
    Member walt hamm's Avatar
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    WR and screw down crown

    I received in my e-mail the usual almost once a day e-mail from Long Island watches an advertisement for Aristo watches. All of the watches, and in particular, the automatic movements, had a WR of 50m (screwed in back type). This got me to thinking. I have a Timex scout watch which has a snap on case, no screw down crown and cost me all of $35 and yet has a WR of 50m. Assuming Timex's WR is in the ballpark of what it purports, is the key element for getting above 50m the screw down crown? How much more does it cost to use a screw down crown? It seems to me the advantages would outweigh any negatives (are there any?).

  2. #2
    Member G26okie's Avatar
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    Re: WR and screw down crown

    Quote Originally Posted by walt hamm View Post
    I received in my e-mail the usual almost once a day e-mail from Long Island watches an advertisement for Aristo watches. All of the watches, and in particular, the automatic movements, had a WR of 50m (screwed in back type). This got me to thinking. I have a Timex scout watch which has a snap on case, no screw down crown and cost me all of $35 and yet has a WR of 50m. Assuming Timex's WR is in the ballpark of what it purports, is the key element for getting above 50m the screw down crown? How much more does it cost to use a screw down crown? It seems to me the advantages would outweigh any negatives (are there any?).
    I believe there is quite a bit of misinformation out there about water resistance ratings when it comes to watches. I don't know how to really explain it, but somewhere along the line a 3ATM rating which should technically be fine to 30 meters, is just about resistant to washing your hands and rain/splashes.



    I don't know how or why this kinda thing became the standard because it is quite ridiculous.

    As far as a screw down crown being the difference between 50m and higher? That is not the case. Actually on my wrist right now is a Victorinox Chrono Classic XLS without a screw down crown, or screw down pushers rated to 100m and it has been tested to such.
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  3. #3
    Member Chris Stark's Avatar
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    Re: WR and screw down crown

    How much diving will you be doing below 165 feet?
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    Re: WR and screw down crown

    Marketing...that's all.

  6. #5
    Member chefmhf's Avatar
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    Re: WR and screw down crown

    Quote Originally Posted by G26okie View Post
    I believe there is quite a bit of misinformation out there about water resistance ratings when it comes to watches. I don't know how to really explain it, but somewhere along the line a 3ATM rating which should technically be fine to 30 meters, is just about resistant to washing your hands and rain/splashes.



    I don't know how or why this kinda thing became the standard because it is quite ridiculous.

    As far as a screw down crown being the difference between 50m and higher? That is not the case. Actually on my wrist right now is a Victorinox Chrono Classic XLS without a screw down crown, or screw down pushers rated to 100m and it has been tested to such.
    I agree 100%. Seiko 5 has WR to 100m but no screw down crown. As I understand it there are other watches with higher WR and no screw down crown. I believe the SD crown is more of a back up. The real WR is accomplished by the rubber seals that become tighter under pressure.


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  7. #6
    Member Buramu's Avatar
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    Re: WR and screw down crown

    Why would anyone take a shower 50 meters under water?
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  8. #7
    Member BrentYYC's Avatar
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    Re: WR and screw down crown

    FYI you can get up to 200m or more water resistance without needing a screw down crown. Since recreational dive depth limits are 30-40 meters, how much depth do you really need? I often dive with a cheapo Seiko 5 without a screw down crown, and have never had a problem.

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