Don't remember the exact timeframe but 1st watch: 1 and a half years 2nd watch: family member bought it, used it for a month at most and I took it. Lasted me 5 months 3rd watch: got this back in March 2025 and the battery is dying. Last week a full change could last me, about 15 or so hours. Charge it the night before and be good the next day. 2 days ago it's not lasting me. Charged it last night, and now the battery died around 2pm
My watches lasted a long time. Perhaps your degraded use was due to your handing/usage of the watches? You also do no know what your relative did to the watch during the month they owned it. Most people do not do the proper maintenance on their watches to keep them running smoothly. These are electronic devices and require the same care and maintenance as any other computer - same with the phones.
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