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Presents core technical dimensions and specifications of the ETA 251.265 movement.
Comprehensive list of movement components with reference numbers and descriptions.
Step-by-step guide for assembling the hand-setting and electronic module, including lubrication.
Instructions for assembling the electronic module and motors with visual aids.
Details assembly of the time-zone and date mechanism with lubrication notes.
Provides instructions for assembling the display components.
Explains the operation of the 30-minute, 60-second, and 12-hour counters.
Provides detailed measurements for component heights crucial for hand fitting.
Outlines the procedures for performing electrical tests on the movement.
Details specific test parameters, measurement values, and expected outcomes.
Explains digital displays, crown positions, and basic time/date setting.
Details how to set, activate, and deactivate the alarm function.
Details various chronograph modes: simple, ADD, SPLIT-TIME, LAP-TIME.
Covers digital display indicators and advanced alarm setting procedures.
Explains advanced chronograph modes and time zone correction.
Details digital watch indicators and the process for setting the time.
Provides instructions for setting and operating the alarm function.
Explains various timing modes and correction procedures for time zones.
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