Winding: manual-wind

Frequency - Variations per hour: 4Hz - 28800 V/h

Power Reserve: 63 hours

Accuracy: -7/+7 seconds / day

Jewels: 23

Service every 6–8years

Calibre Sellita SW510 M b

Swiss made

Thickness: 7

central hr

central min

small sec at 9

Chronograph: 60s counter in center, 30m counter at 3 , 12h counter at 6

Reliability: High