Specifications

1918
Examples of Use
Moderate exposure to
water (washing, kitchen
work, swimming, etc.)
Marine sports (skin
diving)
Scuba diving (with air
tank)
Operation of the
crown with moisture
visible
OK NO NO NO NO
OK OK NO NO NO
OK OK OK NO NO
Minor exposure to water
(washing face, rain, etc.)
Indication
Dial
Case (caseback)
Water-
resistant to 3
atmospheres
WATER RESIST(ANT)
10/20 bar or
WATER RESIST (ANT)
WATER RESIST(ANT)
5 bar or
WATER RESIST (ANT)
WATER
RESIST(ANT)
WATER RESIST
or no indication
WR 50 or
WATER RESIST 50
WR 100/200 or
WATER RESIST
100/200
Water-
resistant to 5
atmospheres
Water-resistant
to 10/20
atmospheres
Specification
(The unit “bar” is roughly equal to 1 atmosphere.)
* WATER RESIST(ANT) xx bar may also be indicated as W.R. xx bar.