Seiko Calibre 7T11A Quartz Chronograph Movement with 24-Hour Indicator

Restore a compatible watch with this Seiko Calibre 7T11A analogue quartz chronograph movement, featuring a 24-hour indicator and a stopwatch capable of measuring up to 12 hours in one-second increments.

The main time is displayed using hour, minute, and small-seconds hands. Separate stopwatch second, minute, and hour hands support standard, accumulated elapsed-time, and split-time measurements.

Product Specifications

Product Type: Analogue Quartz Chronograph Movement
Manufacturer: Seiko
Calibre: 7T11A
Main-Time Display: Hour, Minute, and Small Seconds
Additional Display: 24-Hour Indicator
Stopwatch Display: Seconds, Minutes, and Hours
Stopwatch Capacity: Up to 12 Hours
Measurement Interval: One Second
Stopwatch Functions: Standard, Accumulated Elapsed-Time, and Split-Time Measurement
Outside Diameter: 27.60 mm
Casing Diameter: 27.00 mm
Movement Height: 3.30 mm
Driving System: Three Step Motors
Accuracy: Less than 15 seconds per month at 5–35°C
Battery Type: SR927SW Silver-Oxide Battery
Battery Voltage: 1.55 V
Estimated Battery Life: Approximately 5 years when the stopwatch is used for less than two hours per day
Battery-Life Indicator: Yes—small seconds hand advances at two-second intervals
Seconds-Hand Stop Function: Yes
Jewels: 0

Package Contents

1 × Seiko Calibre 7T11A Quartz Chronograph Movement

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

Please compare the complete 7T11A calibre marking, movement dimensions, dial and subdial layout, stem and pusher positions, hand heights, dial fittings, and movement-holder requirements before ordering.

After installing a battery, the electronic circuit must be reset and the stopwatch hands correctly aligned to their zero positions. Professional installation is recommended.

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