Winding: automatic

Frequency - Variations per hour: 3.5Hz - 25200 V/h

Power Reserve: 72 hours

Accuracy: -4/+6 seconds / day

Jewels: 21

Calibre ETA A31.L11 L888.4

Swiss made

Thickness: 3.85

central hr

central min

central sec

Date

Watch brands using this movement: Longines