Battlery & Pressure testing
BATTERY & PRESSURE TESTING
If Watch Battery fitting only (no guarantee of water resistance).
To replace your watch battery, we clean the contacts, replace the case back gasket, check the timekeeping, using only fresh branded batteries.
We also undertake battery resealing & pressure testing on most modern watches down to the pressure indicated on the dial or the case back, to a maximum of 100 bar.
Your old battery is checked, contacts cleaned and neutralized. The new watch battery is date marked, the movement timekeeping and battery consumption are checked and if necessary adjusted. Case components inspected, and cleaned to ensure the case closes correctly, case back gaskets are always changed even if a pressure check is not requested. All watch functions are checked and the timepiece is set to time and date. Usually the watch can be returned next day if a card payment is made.
Below is a guide to watch water-resistance values and their intended use.
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*
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.
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 minutes, it is recommended to check the water resistant qualities of the timepiece. If the glass remains cloudy, urgent work is required.
Most watches are water resistant to at least 3 atmospheres (ATM). See table below for dept recommentations.
A wristwatch may only be described as water resistant if it is able to resist sweat, water drops as well as rain and does not allow any water to penetrate when held under water for 30 minutes at a depth of 1 meter. All of the watches caring the label "water resistant 30M" meet these specifications. Since water pressure and temperature can vary greatly while swimming or diving, such watches are not suitable for this activity even though they are water resistant. These watches are intended solely for normal everyday use.
When pressures above 4 atmospheres (5ATM, 10ATM, 20ATM) are indicated, wristwatches must be resistant against diving and vigorous movement in the water, in other words a watch suitable for swimming must be tested to at least 5 atmospheres and thus be water resistant to a depth of 50 meters.
How long a wristwatch remains waterproof depends very much on how the watch is treated. A waterproof designation is only about the watch at the time the test was conducted. Precise statements about the duration of water resistance is not possible. In principle, the water resistance of a watch can end after very little time example - through a blow to the crown, hits to the case, broken glass, exposure to chemicals or perfumes or through strong temperature changes (sauna, hot showers). Every watch has a maximum tolerance, and if these are exceeded, damage will occur.
Always ensure the crown (winder) is fully screwed down or pushed in.
Never use the chronograph (stop watch) pushers in the water or sauna.