DESCRIPTION
The ETA 980.163 is a Swiss quartz ladies’ oval movement with three hands (hour, minute, small seconds). It measures 13.00 × 15.15 mm (5 1/2 × 6 3/4 ligne) with a total height of 2.20 mm, features gold-colored plates, 7 jewels, and runs on a 317 battery. Hand sizes are 120/70/20, and the H1 version has an hour wheel height of 0.98 mm. When replacing the movement, matching the hour wheel height is essential; the center-to-center distance from the hour wheel to the small seconds pinion is 6.25 mm, which is critical for proper dial layout and hand alignment.