E61.111

ETA Flatline E61.111 PreciDrive: 1.95 mm height, 18.20 mm diameter. Features hours, minutes, sweep seconds, date with corrector, 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 utilizes thermo-compensation to maintain COSC-grade accuracy by adjusting motor pulses for temperature fluctuations, assuming stable conditions (20°C–30°C) and no impact; the integrated, sealed construction protects precision from moisture.