Seiko - 5 Actus - No reserve price - Men - 1970-1979

Brand: Seiko
Model: SEIKO 5 ACTUS
Reference number: 6106-7470
Serial number: 0N4615
Movement: Automatic
Day display: English and Japanese
Case dimensions: approx. 38 mm (excluding crown)
Bracelet material: Stainless steel

Wrist size adjustment: Adjustable from approximately 16.5 cm to 17.7 cm by adding or removing links and changing the micro‑adjustment holes on the buckle. Currently set at 17 cm (center position).

Condition:

Case: Minor scratches and scuffs present, but no significant scratches or stains.

Bezel: Minor scratches and scuffs present, but no significant scratches or stains.

Dial: No major damage or stains.

Crystal: Minor scratches present (last photo).

Bracelet: Minor scratches and scuffs present, but no significant scratches or stains.

Crown:

Time setting: Pull out the crown to set the time.

Date quick setting: With the crown in its normal position, lightly press it to advance the date by one day.

Day/Date quick setting: With the crown in its normal position, firmly press it deeply to advance both the day and the date by one step.
(For details, please refer to the Calibre Specifications.)

The automatic winding mechanism functions correctly.

Accessories included: Watch only (no box or papers).

Other notes: Made in Japan.

Shipping: Ships via EMS or FedEx international registered mail (with tracking and insurance). Estimated delivery time to Europe is 3–10 business days after shipment.

Calibre Specifications
Movement: Seiko 6106 Automatic

Calendar: English/Japanese bilingual day‑of‑the‑week + date display.

Quick‑set method: Push‑in crown (push‑type quick‑set).

Calendar Operation Specifications (type where movement changes based on push depth):

Date fast‑forward: From the crown’s normal position, a shallow push advances only the date by one day.

Date + day fast‑forward: Similarly, from the normal position, a deep, firm push advances both the date and day simultaneously by one step (days cycle in English → Japanese → English order). *Note: Depending on the model or individual watch, the behavior may vary (e.g., deep push advances only the day, or deep push advances both date and day). However, this two‑stage push specification is typical for the 6106 series.

Important Safety Precautions:

Avoid performing push‑to‑advance operations between 9:00 PM and 2:00 AM, as this is when the calendar switching mechanism is active. Doing so may cause gear damage.

When adjusting the calendar, it is recommended to first set the time to approximately 6:00.

When pushing the crown, hold the case firmly and press the crown straight down. Avoid applying force at an angle.

Practical Setting Method (steps for actual use):

First set the time to around 6:00. To avoid damaging the calendar mechanism, set the time to a position outside the 9:00 PM to 2:00 AM window before beginning adjustment.

Set the date to the day before (shallow push). With the crown in its normal position, lightly and shallowly push to advance only the date to the day before the target date. Example: If today is the 10th, advance the date to the 9th.

Advance the date and day of the week to the target position (deep push). From the normal position, perform a full deep push to advance both the date and day of the week simultaneously, one step at a time. Repeat this deep push until the date reaches the position for today. Stop the day display at either English or Japanese, whichever you prefer.

Set the time to the current time. Pull out the crown and rotate the hands while crossing midnight, keeping AM/PM in mind, to set the actual current time. The date will advance one day during this process, so adjust to ensure the final correct date is achieved through the “previous day setting + crossing midnight” method.