Chealwatch watch repairs
Water ~ Resistance
Below is a guide to water-resistance values and their intended use.
*Water-Proof* Old terminology which covered all types of Water-Resistance. Most timepieces bearing this claimant are well past their original efficiency and should, at best be treated as *Water Resistant* |
*Water Resistant* Timepieces marked *Water Resistant* by ISO 2281 have passed the following test only; 30 minutes under water at a depth of 1 m (3ft) followed by 90 seconds under a pressure corresponding to 20m (66ft) . *3 ATM* and *Water Resistant* are NOT suitable for swimming. |
Usage The crown must be in the normal or *Screw Down* position and must NOT be worked when wet. Dry with a soft cloth after immersion. Keep in mind that water-resistance is not a permanent condition. For example, the gaskets that are fitted in the crown, case back and glass will deteriorate with time and should be inspected and changed periodically. It is good practice to change the battery hatch or case back seals whenever the battery cell is changed. |
*Misting* or *Fogging* A drastic reduction of temperature turns moisture inside the watch to dew, which adheres to the inside surface of the case, the glass may become cloudy. The cloudy glass, will generally became clear in a few minuets, it is recommended to check the water resistant qualities of the timepiece. If the glass remains cloudy, urgent work is required. |
Water Resistant |
30m 100ft 3ATM 3 BAR |
50m 160ft 5 ATM 5 BAR |
100m 300ft 10 ATM 10 BAR |
150m 500ft 15 ATM 15 BAR |
200m 660ft 20 ATM 20 BAR |
1000m 3,300ft 100 ATM 100 BAR |
Accidental Splashes |
Swimming |
Swimming Snorkelling |
Scuba Diving |
Professional Deep Sea Diving |
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ISO 2281 |
ISO 6425 |
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ISO = International Standards Organisation. |