Q: What is the OMEGA Seamaster 36mm Ref 2506.70 Jacques Mayol?
A: It’s a late‑1990s, Swiss‑made Seamaster Professional in a 36mm stainless steel case with an automatic movement, date display, and a distinctive green wave‑pattern dial. This special edition features a “Jacques Mayol 1998” engraving and is delivered as a full set from 1999.

Q: Which movement does this model typically use?
A: Most mid‑size automatic Seamaster Professional models from this era are powered by the OMEGA Calibre 1120 (based on the ETA 2892‑A2). Exact calibre can vary by reference and production run; we’re happy to confirm the movement in this specific watch on request.

Q: Is it water‑resistant and can I swim with it?
A: Seamaster Professional models of this period were originally rated to 300 metres, but water resistance on vintage watches is not guaranteed. Avoid swimming or showering unless the seals have been replaced and the watch has been pressure‑tested by an authorised watchmaker. Always ensure the crown is fully screwed down before any exposure to moisture.

Q: How do I set the time and date?
A: Unscrew the crown anti‑clockwise. Position 1: manual wind (about 20–30 turns if the watch has stopped). Position 2: quickset the date. Position 3: set the time. Avoid changing the date between roughly 8pm and 2am to protect the mechanism. When finished, push the crown in and screw it down firmly.

Q: What wrist size will the 36mm mid‑size suit?
A: The 36mm case wears elegantly on small to medium wrists and is widely considered unisex. The bracelet in this listing fits approximately 18cm; two extra links are included, and we can size the bracelet for you before shipping.

Q: What makes the Jacques Mayol edition special?
A: It pays tribute to free‑diving legend Jacques Mayol and is distinguished by its commemorative case engraving and unique dial colourway. Collectors appreciate the design details and its specific late‑1990s production period.

Q: Does it have a sapphire crystal and the wave dial?
A: Seamaster Professional models from this era typically feature a scratch‑resistant sapphire crystal and OMEGA’s signature wave‑pattern dial. This example presents the distinctive green wave dial; we can confirm crystal specifics if you wish.

Q: Can I fit a different strap or replace the bracelet?
A: Yes. The mid‑size Seamaster typically uses an 18mm lug width, so quality straps or the correct OMEGA bracelets for 36mm models can be fitted. Contact us for compatible options or sizing support.

Q: What is included and is the watch authentic?
A: This piece is delivered with box, outer box, certificate and two extra links. A Retro Tale professionally authenticates every item and provides a 12‑month mechanical guarantee, insured shipping, and a 14‑day return policy.

Q: How should I care for a vintage Seamaster and when should it be serviced?
A: Wipe the watch with a soft microfibre cloth, avoid strong magnets and chemicals, and store it dry. A routine service every 5–10 years is generally recommended, or sooner if there are timekeeping or water‑resistance concerns. Have gaskets checked periodically if you plan any moisture exposure.

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