E61.511

ETA Flatline E61.511 PreciDrive: 1.95 mm height, 18.20 mm diameter. Features hours, minutes, small seconds, date window, E.O.L. display, 9 jewels, and chronometer rating. Theoretical battery life is 28 months (14.5 mAh) or 39 months (20 mAh). PreciDrive uses thermo-compensation to manage motor pulses based on ambient temperature, achieving COSC-certified precision when stored between 20°C and 30°C and shielded from impact; the sealed quartz and integrated circuit design ensures moisture-resistant accuracy.