Think about what kind of service hours required
Type of service implies that the clock, which ultimately determines the hours of life, should also influence your purchase.
Mechanical (manual and automatic), the clock should be cleaned every three years or after the manufacturer's recommendations for avoiding problems in the care and recreation, at the cost of hours. In quartz (battery), watches, clocks should be removed when the battery is replaced. Open the battery usually lasts from two to five years, depending on the clock. Certain types of watches have a power reserve indicator. After the second hand jumping every five seconds, this time for the battery. Some watches are equipped with lithium-iodine batteries with a theoretical period of ten years.
Since most people own quartz watches, it is crucial to the changes that the battery must be signed by authorized service centers. If for some reason it is not possible, the batteries should be made in a professional watchmaker. The reason is that while replacing the batteries, O-rings (the press) should be replaced, and returned to the rear of the clock, the clock must be properly sealed and shall be subject to the water resistance test.
All these measures are necessary to ensure that your watch waterproof. If the water in case of damage, and they cause rust, it could lead to very expensive repairs. Several companies offer "and you-wait battery replacement, where you can walk away happy with a new battery and clock, which once more on the way. Unfortunately, it is possible that later disappointed to find a drop of water on the face of the clock, or even worse, There is no signs of leakage - that is, until the clock stops completely. then it may be too late to repair hours, without a full analysis.