ETA SA F04.11

The ETA F04.11 is a quartz caliber manufactured by ETA SA in Switzerland. It measures 19.40 mm in diameter and stands 2.50 mm tall on the movement (2.65–3.10 mm with battery installed, depending on battery type). Operating at 32,768 Hz with no jewels, it includes a date complication displayed at 3 o'clock. The movement features a stop lever activated at stem position 3 and a battery-saving function when the stem is pulled out.