Seiko Calibre 8B63A Solar Radio-Controlled Quartz Movement

Restore a compatible watch with the Seiko Calibre 8B63A solar radio-controlled quartz movement, featuring a three-hand main display, date window, retrograde day indicator, and dual-time subdial.

Designed for compatible Seiko solar radio-controlled watches, this movement supports automatic and manual time-signal reception. It can synchronize with supported standard-frequency transmitters in Japan, China, the United States, Germany, and the United Kingdom. Its world-time function allows the main display to be adjusted for different time zones, while the secondary dial displays another time zone.

Additional functions include an energy-depletion warning, power-saving mode, reception-result display, and automatic hand-position correction. When assembled with the correct rechargeable battery and solar panel, the movement has an approximate operating duration of nine months from a full charge, or up to approximately two years with power saving activated.

Product Specifications

Product Type: Solar Radio-Controlled Quartz Movement
Manufacturer: Seiko
Calibre: 8B63A
Main Display: Hour, Minute and Central Seconds
Calendar: Date and Retrograde Day Indicator
Subdial: Dual-Time Hour and Minute Display
World-Time Function: Yes
Radio Reception: Automatic and Manual
Supported Radio Regions: Japan, China, United States, Germany and United Kingdom
Quartz Frequency: 32,768 Hz
Accuracy Without Radio Synchronization: ±15 Seconds per Month
Operating Temperature: −10°C to +60°C
Power Source: Rechargeable Secondary Battery
Energy-Depletion Warning: Yes
Power-Saving Function: Yes
Automatic Hand-Position Correction: Yes
Reception-Level and Result Display: Yes

Please verify the complete calibre code, dial configuration, hand fittings, stem position, calendar arrangement, solar panel, rechargeable battery, antenna components, and movement-holder configuration before ordering. Professional installation is strongly recommended.

Package Contents

1 × Seiko Calibre 8B63A Movement Only

Important: The rechargeable battery, solar panel, winding stem, and all other accessories are not included.

Seiko and its associated product names are trademarks of their respective owner. These names and the calibre reference are used solely for accurate product identification.