ETA SA F05-105

Caliber F05-105 is a quartz movement manufactured by ETA SA in Switzerland. Measuring 23.3 mm in diameter and 2.5 mm thick, it displays hours and minutes with an optional central seconds hand and includes a stop second function. The movement features an end-of-life battery indicator and is available with two battery options delivering either 68 or 94 months of operating life. It contains three jewels.