FRANCK MULLER Long Island 23mm Ref 902QZ Full Set Watch

Q: What is the Franck Muller Long Island 23mm Ref 902QZ?
A: It’s a vintage, Swiss‑made quartz dress watch with a stainless‑steel rectangular 23mm case, a white Art Deco dial with bold numerals, and a black Franck Muller leather strap. This example is a full‑set piece delivered with box and certificate.

Q: Is it water‑resistant and can I wear it in the rain?
A: As a vintage watch, water resistance is not guaranteed. Treat it as splash‑resistant at best and avoid showering, swimming or submersion. If light moisture resistance is important, have the gaskets inspected and the watch pressure‑tested by a qualified watchmaker.

Q: What movement and battery does it use, and how long will a battery last?
A: It uses a Swiss quartz movement. Most similar Franck Muller quartz models take a standard 1.55V silver‑oxide button cell; the exact type can vary, so please have a watchmaker confirm the correct battery for this reference. Typical battery life is around 2–3 years depending on use and storage.

Q: How do I set the time?
A: Gently pull the crown out to the time‑setting position and rotate the hands to the desired time. Push the crown back in fully to resume running. Avoid setting the time near strong magnetic fields and do not force the crown if you feel resistance.

Q: What is included with this watch?
A: This piece is delivered as a full set, including box, outer box and certificate, along with the watch on its black Franck Muller leather strap and gold‑tone buckle. If you need confirmation of any specific accessories, just ask us.

Q: What wrist sizes does 23mm suit, and is it unisex?
A: A 23mm rectangular case offers a refined, petite profile best suited to small to medium wrists and classic dresswear. While many Long Island sizes were marketed by gender historically, the design is widely worn unisex today—fit comes down to personal style.

Q: Does it have a sapphire crystal?
A: Many Franck Muller Long Island references feature a scratch‑resistant sapphire crystal, though specifics can vary by model and production year. We can confirm the crystal type on this exact watch upon request.

Q: Can the strap be replaced, and what should I know?
A: Yes. Replacement leather straps can be fitted by a watchmaker; ensure the correct lug width and end shape to suit the Long Island case. Keep the strap away from moisture, perfumes and solvents, and condition it periodically with a suitable leather care product.

Q: How should I care for and service a quartz Long Island?
A: Replace the battery every 1–3 years and have the gaskets checked at the same time. A full movement service is usually only needed if there are issues (e.g., erratic timekeeping or condensation). Wipe the case with a soft microfibre cloth and avoid abrasive cleaners.

Q: Is it authentic, and do you provide a warranty?
A: A Retro Tale specialises in authentic luxury vintage accessories and professionally authenticates every item. This watch is Swiss made and comes with our 12‑month warranty on timekeeping/mechanical performance. We’re happy to share additional photos or details on request.