Water Resistance

Checking the Water Resistance of your Watch

To check the water resistance of your watch, look at the water resistance level indicated on the dial and/or case back.
* For design reasons, the water resistance level is not shown on some watches.

Examples of water resistance indicators

Types of Water Resistance

Refer to the chart below for descriptions of the different levels of water resistance and the situations in which they can be used.

Type	Name	Specifications	Situation
Type	Name	Specifications
Water-resistant watch	Water-resistant for everyday use	Water-resistant to 3 bar	○	×	×	×	×
	Enhanced water resistance for everyday use	Water-resistant to 5 bar	○	○	×	×	×
		Water-resistant to 10 bar	○	○	○	×	×
		Water-resistant to 20 bar	○	○	○	×	×
		Water-resistant to 30 bar	○	○	○	×	×
Diver’s watch	Water-resistant for diving	Water-resistant to 200 m	○	○	○	○	×
	Water-resistant for diving	Water-resistant to 300 m	○	○	○	○	×
	Water-resistant for saturation diving	Water-resistant to 300 m	○	○	○	○	○
		Water-resistant to 800 m	○	○	○	○	○
		Water-resistant to 1000 m	○	○	○	○	○
Non-water- resistant watch	Non-water-resistant	Non-water-resistant	×	×	×	×	×

* Products classified as diver’s watches comply with the ISO6425 standard.
* “1 bar” is equivalent to a pressure of 1 atmosphere and a water depth of 10 m.
* Regardless of the level of water resistance, watches should not be used in the ways listed below, as doing so could cause faults that jeopardize their original performance.

• Using the crown or buttons underwater
• Using the crown or buttons while wet
• Failing to clean the watch to remove any water, seawater, sweat or dirt
• Holding the watch directly under running water from a faucet
• Immersing the watch in hot water or in a hot spring (spa) or using the watch in a sauna
• Using a watch with a screw-lock crown while the crown is unlocked

Water-resistant Watch

Water-resistant for everyday use

Specifications	Indicator
Water-resistant to 3 bar	WATER RESIST

Water resistance and description: Can withstand moisture such as the perspiration produced in everyday activities and splashing from face washing or rainfall, but should not be used in conditions where there are significant changes in water pressure.

Enhanced water resistance for everyday use

Specifications	Indicator
Water-resistant to 5 bar	WATER RESIST 5bar W.R. 5BAR WR 50 (in m.)

Water resistance and description: Can be used for work that involves frequent contact with water and for ordinary swimming. Note that it is not suitable for free diving.

Specifications	Indicator
Water-resistant to 10 bar	WATER RESIST 10bar W.R. 10BAR WR 100 (in m.)
Water-resistant to 20 bar	WATER RESIST 20bar W.R. 20BAR WR 200 (in m.)
Water-resistant to 30 bar	WATER RESIST 30bar W.R. 30BAR WR 30 (in bar) WR 300 (in m.)

Water resistance and description: Can be used for work that involves frequent contact with water (fishing, farming, car washing, catering, etc.) or in free diving and aquatic sports (swimming, yachting, fishing, etc.).

Diver’s Watch

Water-resistant for diving

Specifications	Indicator
Water-resistant to 200 m	DIVER'S WATCH 200m WATER RESIST 200m AIR DIVER'S 200m
Water-resistant to 300 m	DIVER'S WATCH 300m WATER RESIST 300m AIR DIVER'S 300m

Water resistance and description: Pressure resistant to the depth indicated and featuring water resistance suitable for long periods of underwater use. Ideal for both skin diving and scuba diving.

Water-resistant for saturation diving

Specifications	Indicator
Water-resistant to 300 m	DIVER'S WATCH 300m FOR SATURATION DIVING PROFESSIONAL DIVER'S 300m He-GAS DIVER'S 300
Water-resistant to 800 m	DIVER'S WATCH 800m FOR SATURATION DIVING PROFESSIONAL DIVER'S 800m He-GAS DIVER'S 800
Water-resistant to 1000 m	DIVER'S WATCH 1000m FOR SATURATION DIVING DIVER'S WATCH 1000mFOR MIXED-GAS DIVING PROFESSIONAL DIVER'S 1000m He-GAS DIVER'S 1000

Water resistance and description: Pressure resistant to the depth indicated and equipped with structural features designed for saturation diving, which may include a helium gas escape valve. Ideal for skin diving, scuba diving and saturation diving.

Non-water-resistant watch

Water-resistant for everyday use

Specifications	Indicator
Non-water-resistant	No indicator

Water resistance and description: Avoid contact with water.

Maintenance for Water-resistant Watches

Water-resistant watches use soft materials referred to as water-resistant gaskets.
Over long periods of use, water-resistant gaskets may lose their elasticity or become brittle and suffer declines in water resistance due to the effects of exposure to perspiration and moisture.
Problems such as scratches or other damage to the watch glass and warping of components may also impair water resistance.

To maintain the water resistance of your watch, it is recommended that you not only use the watch appropriately, but that you also have your watch serviced regularly and the gaskets replaced at least once every 2-3 years.
*Charges apply to regular servicing.

>Cleaning your wristwatch

If Water Gets Inside Your Watch

If water ever gets inside your watch, or if you suspect that this is the case, immediately stop using it and request repairs.
Water inside a watch can damage parts such as internal mechanisms, electronic components and the dial.