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The type of maintenance the watch requires, which will ultimately determine the watch's life expectancy, should also influence your purchase.
Mechanical (manual and automatic) watches should be cleaned and serviced every three years or according to the manufacturer's recommendations to ensure trouble-free time keeping and to retain the value of the watch. In quartz (battery operated) watches, the watch should be serviced when the battery is replaced. A watch battery usually lasts between two and five years, depending on the type of watch. Certain types of watches feature a power reserve indicator. When the second hand starts jumping every five seconds, it is time to have the battery replaced. Some watches are equipped with lithium-iodine batteries that have a theoretical lifetime of ten years.
Because the majority of people own quartz watches, it is very critical to stress that battery changes should be done by authorized service centers. If for some reason this is not possible the battery change should be done by a professional watchmaker. The reason for this is that during the battery replacement, the o-ring (gasket) must also be replaced and reattached to the back cover of the watch, then the watch must be properly sealed and undergo a water resistance test.
All of the aforementioned steps are crucial to ensure that your watch remains water-resistant. If water penetrates the case, causing rust and damage, this can lead to a very expensive repair. A wide variety of businesses now offer "while-you-wait battery replacements," allowing you to walk away happy with a new battery and a watch that is once again running. Unfortunately, you may later be disappointed to find water droplets on the dial of your watch, or worse yet, no signs of leakage--that is until your watch stops completely. Then it may be too late to repair the watch without a complete overhaul.
Go News Center Added by: jessie Add time: 2009/5/12 20:16:54 view >>
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