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What is the normal lifespan of a digital watch?

I was cheap, dime store watches, and I had the watches Moreover, as the watch I bought in March 2005. With most cheap watches, when the battery was disconnected after only about 2.5 years of use, and I took the watch to repair all the stores they told me was "Just buy another." I do not know when my last watch was manufactured, but I bought it in March 2005. In mid-summer 2007, the original battery was cut, and I replaced the battery. The new battery lasted until July 2009. Although I replaced the battery, again, I noticed that some of the original functions watches no longer work, while others only work when I press the keys strongly. I wonder that the life expectancy of a digital watch is short?

It depends on the quality of the watch. I just bought a Timex. It only costs $ 50.00. So far, so good, and I just spent two days in the desert in considerable hardship, including obtaining soaked in a creek to ford was. The watch is water resistant to 100 meters or 300 feet so the dip does not affect it. It is indeed important that the buttons do not work may be dirt and dust from entering the watch. Better sealing keeps the inside clean and working. Or it could just be the contacts at low prices on some of the buttons to wear. The battery in my watch is supposed to take up to 10 years. At that time, I'll see if I want to replace the battery or the watch.

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