Uff, pred 30 leti mi je zaposleni pri urarstvu Kajfež za Bežigradom v LJ dejal, da je VELIKA razlika med Waterproof in Water resistant in sicer v korist Waterproof, kar se tiče tesnjenja za vodo.
Sam se v to nisem poglabljal.

No zdaj pa sem se malo...
www.ghostekproducts.com/blog/water-resistant-vs-waterproof/


WHAT IS WATER RESISTANCE?


This means that your device is able to resist water, but it’s not 100% full proof. Of the three ways you can protect your phone, iPad, electronic device from water, this is at the bottom of the totem-pole. Watches are often made water resistance due to unforeseen weather conditions attacking your wrist. They’re actually considered to be on a different rating scale than most other electronics. Scuba-diving watches are the only watches that can be identified in the market as “waterproof”. A withstanding argument is that nothing is actually “waterproof” but just varying in degrees of water resistance.


WHAT IS WATER PROOF?


This means that your device can be submerged in water for some time and remain unaffected. It is not a permanent condition. After some time your “Water proof” protective shield will have reached its limit of defense.

Sicer tole ni za tole temo ampak zelo ugledna švicarska web stran, ki pokriva tudi terminologijo pravi takole:

Waterproof:
Describes a watch which, in theory, will not let in water at a depth of up to 3 atm or 30 metres.
www.hautehorlogerie.org/en/encyclopaedia...king/s/waterproof-1/

Water resistance:
A watch's water-resistance is measured in bars (a unit of pressure where 1 bar equals 1 atmosphere or atm).
Manufacturers generally indicate this water-resistance in metres (m), feet (ft), or atmospheres (atm)....
www.hautehorlogerie.org/en/encyclopaedia.../water-resistance-1/

Danes so v uporabi večinoma podatki za Water resistance izračena v ATM.

Jaz sem bolj ciljal na tole:
forums.watchuseek.com/f281/difference-be...r-resist-209700.html

Saj to je sedaj že na vseh urah označeno kot enota, ki določa kaj lahko z uro delamo v vodi (M ali A ali ft.).