Seiko Calibre 7T04A Quartz Chronograph Watch Movement with Big Date

Restore a compatible chronograph watch with this Seiko Calibre 7T04A analogue quartz movement, featuring a 60-minute stopwatch, 24-hour indicator, and distinctive big-date display.

The movement provides hour, minute, and small seconds timekeeping. Its chronograph measures elapsed time in 1/5-second increments and is suitable for replacing a faulty 7T04A movement or completing a compatible repair or restoration.

Product Specifications

Product Type: Quartz chronograph watch movement
Calibre: 7T04A
Display: Analogue
Main Time: Hour, minute, and small seconds
Additional Time Display: 24-hour indicator
Calendar Function: Big-date display with quick correction
Chronograph Capacity: Up to 60 minutes
Chronograph Resolution: 1/5 second
Movement Diameter: 27.6 mm
Casing Diameter: 27.0 mm
Movement Height: Approximately 4.93 mm
Driving System: Three step motors
Jewels: 0
Compatible Battery: SR927SW
Battery Voltage: 1.55 V
Estimated Battery Life: Approximately 5 years
Accuracy: Approximately ±15 seconds per month
Battery-Life Indicator: Small seconds hand advances at two-second intervals when battery power is low
Additional Functions: Seconds-hand stop and electronic circuit reset

Package Contents

1 × Seiko Calibre 7T04A Quartz Chronograph Movement

Not Included: Battery, winding stem, dial, hands, movement holder, pushers, crown, or any other accessories.

Please compare the complete calibre marking, dimensions, stem position, hand fittings, hand-height configuration, big-date wheel style, dial feet, and movement holder before ordering.

Professional installation, circuit resetting, and chronograph-hand calibration are recommended to ensure correct operation.

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