ETA SA E64-111

The ETA E64.111 is a Swiss-made quartz movement manufactured by ETA SA. It measures 25.6mm in diameter and 1.95mm in height, with 8 jewels and a stated battery life of 41 months using a Renata 373 cell. The movement includes a date complication and an end-of-life indicator that advances the seconds hand in four-second intervals when the battery is low. Some variants are PreciDrive movements, qualifying as high-accuracy quartz. The movement uses a friction-held battery cell that can be replaced without removing screws or straps.