View single post by Watchthis
 Posted: Thu Dec 16th, 2010 12:14 am
PM Quote Reply Full Topic
Watchthis

 

Joined: Sun May 30th, 2010
Location:  
Posts: 11
Status: 
Offline
 Johnny, Johnny, i don't know why you're getting so wound up (forgive the pun) All I'm saying is that a designated water resistance has nothing to do with how deep one can actually go. Besides that standards dictate that the stamped rating only needs to be sustained for 90 seconds!
As I said, my point is that Dievas is charging good money for a high tech piece in all aspects except you can't even safely ride a jet-ski with it!
Here is an article from a major watch reseller:


Water Resistance
Water Resistance. The ability of the case of a watch to resist the intrusion of moisture is called its water resistance. Often times, a watch buyer will think that when he is buying a watch water resistant to 30 meters, he can swim with it since he wont be going deeper than 30 meters in any event.

Water resistance ratings of watches are a bit misleading. The water resistance rating of a watch is based on laboratory pressure tests comparable to gently lowering that watch into still water to the certified depth.

For example, when a watch is rated water resistant to 30 meters or 3 ATM (3 atmospheres), it means that it can survive being lowered in still water to a depth of 30 meters. The other lesser know part is that, it is only certified to witstand the pressure of 30m, for a period of 90 seconds. It is tested for be resistant to water for a period of 30 minutes at the pressure equivalent to a depth of 1 meter. Why, because the meter value does not reflect actual diving depth, but to air pressure.

Diving into a pool or moving your arms in a freestyle motion while swimming creates more pressure than that found in still waters 30m below the surface. For all practical intents and purpose a watch with 30m water resistance should simply be not used in the water. Think of it as more of protection against accidental exposure to water. I would recommend that you do not even let it get hit by a direct flow of water from a household sink.

"For a watch to be used safely while swimming, I would recommend one with at least a 100 meter water resistance rating. This is fine for swimming or snorkeling close to the surface, but not for any kind of diving. If you are buying a watch to be used specifically for use with water sports like jet-skiing or diving (without scuba gear) than at least a rating of 200 meters water resistant would be advisable."