ETA caliber E61.111

ETA Flatline E61.111 PreciDrive H 1,95 mm ∅ 18,20 mm Hours, minutes, sweep second. Date, corrector. Stop device and interrupter. Battery End-of-Life indicator (E.O.L.). 8 Jewels. Autonomy theoretic of battery : 28 months (battery 14,5 mAh) or 39 months (battery 20 mAh). PreciDrive can achieve a precision which can pass theCOSC chronometer certification, provided the watch is not exposed to impacts, and kept at a temperature of between 20°c and 30°c. This precision can be achieved thanks to the thermo-compensation operating principle, which controls and regulates the motor pulses according to changes in the ambient temperature. By virtue of combining the quartz and integrated circuit in the same waterproof case, the precision is insensitive to moisture.