ETA SA E20.321

The ETA E20.321 is a Swiss quartz movement introduced in 1999. It measures 30 mm in diameter and 6.95 mm thick, operating at a standard 32768 Hz frequency with a 9-jewel count. The movement features separate stepper motors for the second and minute hands, an alarm function with its own coil, and a lighting circuit with secondary coil, powered by a CR2320 battery. It is an in-house ETA manufacture.