Thanks for the explanation. I was wondering how the pressure testing was done. Also, it's good to see Dave. I've spoken with him on the phone a couple of times about minor issues and each time he was both knowledgeable and courteous. Thanks, Dave! BTW, I own 4 Momentum watches. Not bragging, just indicating the confidence these very accurate timepieces give me, and how much I like the attractive and rugged styling.
Generally it can. The key issue for us is the difference between a screw down crown model and a conventional crown. The non screw crown relies on o-rings to ensure water resistance, so may safely test to 3ATM when new… but after some time the rubber o-rings become less flexible and the lubrication on the o-rings will dry out, so the water resistance becomes less and less reliable. A screw crown model “squeezes” the o-ring between the crown and the case when the crown is screwed in, making a positive seal. This will work even if the rubber becomes less flexible and the lubrication dries out, so will give a more reliable seal over a much longer time. A non screw crown watch may test to 3ATM when new, but there is a lot of pressure, even at 30m deep, to push water past the o-rings, especially as the watch gets older!
wouldnt it be more better and economical to put all the watchses in a big like boxs with a holes and drop it into the water? then the tested watch survive
Great explanation! I always wondered how pressure testing worked without damaging the watch.
Glad it was helpful!
Interesting, thanks for the explanation. 👍🏼
Thanks for the explanation. I was wondering how the pressure testing was done. Also, it's good to see Dave. I've spoken with him on the phone a couple of times about minor issues and each time he was both knowledgeable and courteous. Thanks, Dave! BTW, I own 4 Momentum watches. Not bragging, just indicating the confidence these very accurate timepieces give me, and how much I like the attractive and rugged styling.
Great explanation! I’m watching this video while wearing the Momentum Square 2 chronograph! Great watch!
Happy to hear you like the watch! Thanks for the support :)
Thanks.... would love to hear more about your testing...!
More to come!
That is really cool! I've wondered how that works.
Thanks!
Well done.
Thank you!
thanks for watch-ing...I see what you did there!
😁
Nice video
Thanks!
So a 3ATM watch can definitely , 100% go to 30 meters deep in water?
Generally it can. The key issue for us is the difference between a screw down crown model and a conventional crown. The non screw crown relies on o-rings to ensure water resistance, so may safely test to 3ATM when new… but after some time the rubber o-rings become less flexible and the lubrication on the o-rings will dry out, so the water resistance becomes less and less reliable. A screw crown model “squeezes” the o-ring between the crown and the case when the crown is screwed in, making a positive seal. This will work even if the rubber becomes less flexible and the lubrication dries out, so will give a more reliable seal over a much longer time. A non screw crown watch may test to 3ATM when new, but there is a lot of pressure, even at 30m deep, to push water past the o-rings, especially as the watch gets older!
wouldnt it be more better and economical to put all the watchses in a big like boxs with a holes and drop it into the water? then the tested watch survive