
At the time of purchase and a couple of years after, they were among the best in terms of price / quality. But, like everything in this universe, they become obsolete. I am looking for a replacement, although they are quite on the move, the strap and the case are slightly shabby on the side. Its pros: Quality, acceptable accuracy, price at the time of purchase (JPY 7,000). For 4 years there were no glitches, although I used them in a wide variety of conditions, except that they had never been in space. One battery change, after about 3.5 years. Got cons: Under the strap in the summer, the hand sweats, not exactly a disadvantage, but sometimes annoying. The backlight is no good. Especially in models with an inverted display.

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