Q: What is the Heuer Carrera 45 Ref. 3647N ca 1963?
A: It’s an authentic, Swiss‑made vintage Heuer Carrera manual‑wind chronograph with a black (“noir”) dial and a stainless steel case around 35–36mm. This example features an unpolished case and is paired with an aftermarket brown leather strap, delivering classic sporting elegance for everyday or dress wear.

Q: Which movement does it use?
A: The listing notes a manual Valjoux 72 calibre. As with many vintage Carreras, production variations exist, so we’re happy to confirm the exact movement with detailed photos upon request. The watch has been professionally inspected and is covered by our 12‑month mechanical guarantee.

Q: How do I wind and operate the chronograph?
A: Wind the crown clockwise 20–30 turns if the watch has stopped. Use the top pusher to start and stop the chronograph; use the bottom pusher to reset. Always stop the chronograph before pressing reset, and avoid operating pushers when the watch is wet or in damp conditions.

Q: Is it water‑resistant?
A: Water resistance on vintage watches is not guaranteed. Treat it as splash‑only and avoid swimming, showering or submersion. If light water resistance is desired, have the gaskets replaced and the watch pressure‑tested by an authorised watchmaker.

Q: What size is the case and how does it wear?
A: The case measures approximately 35mm (sometimes referred to as 36mm in period listings) and wears slim and balanced on the wrist. The fitted strap suits wrists up to about 21cm; we can advise on alternative strap options for other wrist sizes.

Q: What does “3647N” mean?
A: 3647 is the Carrera reference, and “N” stands for “noir,” indicating the black dial. Early Carreras were produced across different executions in the 1960s, so small differences in dial/hand details can occur between batches and years.

Q: Are box and papers included, and is it authentic?
A: This watch is delivered without original accessories unless otherwise stated. A Retro Tale thoroughly inspects and authenticates every item and provides a 100% authenticity guarantee. We’re happy to share additional photos and confirm movement details on request.

Q: How often should a vintage manual chronograph be serviced?
A: Typically every 4–6 years, or sooner if you notice reduced power reserve, erratic timekeeping, sticky pushers or any condensation. Always use an experienced watchmaker familiar with vintage Heuer chronographs.

Q: Can I change the strap, and do you offer alternatives?
A: Yes—straps are easily replaceable. We can suggest and fit high‑quality leather or other period‑appropriate options before shipping. Share your wrist measurement and style preferences and we’ll advise on the best fit.

Q: What are your shipping, warranty and returns policies?
A: We offer free, insured DHL shipping, no customs fees for EU buyers, a 12‑month mechanical guarantee, and a 14‑day money‑back return policy. We own all listed watches and dispatch quickly from Stockholm.