Seiko Calibre 7N42C Analogue Quartz Movement with Date

Restore a compatible watch with this Seiko Calibre 7N42C quartz movement, featuring central hour, minute, and seconds hands together with a date calendar.

The 7N42C uses a load-compensated step-motor system for dependable timekeeping and includes quick date correction, a battery-life indicator, an electronic circuit-reset switch, and a train-wheel setting mechanism. It is suitable for movement replacement, servicing, and watch restoration.

Product Specifications

Product Type: Analogue Quartz Movement
Manufacturer: Seiko
Calibre: 7N42C
Display: Hour, Minute, and Central Seconds
Calendar: Date
Outside Diameter: 26.40 mm
Casing Diameter: 25.60 mm
Movement Height: 2.78 mm
Driving System: Load-Compensated Step Motor
Accuracy: Less than 15 seconds per month under normal operating conditions
Battery Type: SR920SW / 371 Silver-Oxide Battery
Battery Voltage: 1.55 V
Estimated Battery Life: Approximately 5 years
Jewels: 1
Quick Date Correction: Yes
Battery-Life Indicator: Yes
Electronic Circuit Reset: Yes

Package Contents

1 × Seiko Calibre 7N42C Quartz Movement

Not Included: Battery, winding stem, dial, hands, movement holder, and all other accessories.

Please compare the complete 7N42C calibre marking, movement dimensions, date-window position, date-disc style, stem position, hand fittings, and movement-holder requirements before ordering. Earlier 7N42 movement revisions may have different specifications and should not be assumed interchangeable.

Professional installation is recommended.

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