631

QUARTZ • Analog • Chronograph: Chronograph Hands: Hours, Minutes, Small Seconds

Jewels

Diameter

23.15 mm

Height

About this caliber

The JLC caliber 631 'Mecaquartz' caliber is a movement with a quartz base powering a mechanical chronograph; it has a total of 233 parts and can be considered quite complicated. It was most notably used by JLC itself and IWC.

Technical details

Movement: QUARTZ
Display: Analog
Jewels: 25
Power reserve: -
Frequency: -
Hands: Chronograph: Chronograph Hands: Hours, Minutes, Small Seconds
Diameter: 23.15 mm
Height: -
Parts: -