Omega Railmaster 40mm Co-Axial Full Set Watch

Q: What is the Omega Railmaster 40mm Co‑Axial Full Set watch?
A: It’s a robust, Swiss‑made stainless steel tool watch with a 40mm case, three‑hand dial, and an automatic Co‑Axial movement. This example comes as a Full Set with original box, certificates and booklet, and is fitted to an Omega denim strap for a refined, casual look.

Q: Which movement does it use, and is it a Master Chronometer?
A: Modern 40mm Railmaster models typically use an Omega Co‑Axial automatic calibre (often the 8806) and many are certified Master Chronometer. Certification and exact calibre can vary by reference—contact us and we’ll confirm the specifics for this exact watch. It is mechanical (no battery) and self‑winding via wrist motion.

Q: Is the Railmaster anti‑magnetic, and how should I treat magnets?
A: The Railmaster line is engineered for high anti‑magnetism (commonly up to 15,000 gauss on recent models). Even so, avoid prolonged exposure to strong magnetic fields (e.g., speakers, induction hobs). If you notice the watch running abnormally fast/slow, we can arrange a professional check.

Q: Is it water‑resistant, and can I swim with it?
A: Many modern Railmaster references are rated to 150 metres. However, water resistance on pre‑owned watches isn’t guaranteed without recent servicing and pressure testing. We recommend avoiding swimming or showering unless the seals have been replaced and the watch tested. Always ensure the crown is fully secured before any contact with moisture.

Q: How do I wind and set the time on this watch?
A: If the watch has stopped, wind the crown gently (about 20–40 turns) to start it. Pull the crown to the time‑setting position; the seconds hand should hack (stop) so you can set the time precisely. The Railmaster is typically no‑date, so there’s no date quickset. Push the crown back in to resume running and secure it before wear.

Q: Can I swap the denim strap, and what is the lug width?
A: Yes—straps are easily changed. Most 40mm Railmaster models use 20mm lugs, but exact lug width can vary; please ask us to confirm for this specific watch. We can size the strap for your wrist or suggest leather, rubber or steel bracelet options.

Q: What accuracy should I expect, and how often should it be serviced?
A: If Master Chronometer‑certified, Omega targets approximately 0 to +5 seconds per day under METAS standards. Real‑world accuracy varies with wear and service history. Co‑Axial movements generally benefit from servicing roughly every 5–10 years. Your purchase includes A Retro Tale’s 12‑month mechanical guarantee; contact us if performance changes or moisture is observed.

Q: How should I care for the denim strap and case?
A: Wipe the case with a soft microfibre cloth. For the denim strap, brush away dust gently and avoid soaking, solvents, perfumes and oils, which can stain or weaken fibres. Let any light moisture air‑dry away from heat. If you prefer, we can supply alternative straps better suited to frequent water exposure.

Q: What wrist sizes suit a 40mm Railmaster, and is it unisex?
A: 40mm offers a balanced, contemporary profile that suits many medium wrists and also works unisex depending on style preference. The strap is adjustable; share your wrist measurement and we’ll advise on fit, extra holes or alternative strap options.

Q: What is included, and how do you guarantee authenticity?
A: This watch is delivered as a Full Set (box, certificates, booklet). A Retro Tale specialises in authentic luxury vintage and second‑hand items and professionally inspects every watch. We offer free insured DHL shipping, a 14‑day return policy, and a 12‑month mechanical guarantee; EU buyers enjoy 0% customs fees.