I used the waterproof feature all the time. I wore them without taking them off at all. Therefore, sweat, dirt, I had to wash them a couple of times a day, including with soap. I also washed in them. Apparently against the background of this strap and died. But what is characteristic, he still lasted a year and broke and cracked already in civilian life) But this is generally the scourge of any casio watch in general. The strap dies steadily after a year or two of use, depending on the wear conditions. I also note that, on duty, I used the alarm clock 2 times a day all the time, almost the whole year. Also constantly used the backlight. I'm talking about the fact that the energy-intensive functions of the clock were constantly used. And they have withstood a year of such use. I didn’t notice any changes, the alarm clock still beeps through everything, the backlight is still the same bright. About the accuracy. She is very high. For six months they leave a maximum of a minute. In short, for its price, the watch is more than good and performs its functions.
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