
ETA Flatline E61.101 PreciDrive: 1.95 mm height, 18.20 mm diameter. Features hours, minutes, center seconds, stop mechanism, interrupter, E.O.L. indicator, and 8 jewels. Theoretical battery life is 28 months (14.5 mAh) or 39 months (20 mAh). PreciDrive uses thermo-compensation to regulate motor pulses based on temperature, allowing for COSC-level precision when protected from impact and kept between 20°C and 30°C; the sealed quartz/IC unit ensures moisture resistance.
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