Q: What is the Bvlgari Diagono Chronograph 42mm Ref. DG42SV?
A: It’s a Swiss‑made, sporty‑luxury chronograph featuring a 42mm stainless‑steel case, black rubber bezel with BVLGARI logo engraving, a textured black dial with three sub‑dials and a date display, and an automatic movement. This example is in good, pre‑loved condition with the original black rubber strap and stainless‑steel links.

Q: Which movement does it use and what is the power reserve?
A: Diagono Chronograph models of this family typically house a Swiss automatic chronograph calibre (often based on the Valjoux 7750 architecture). Power reserve is commonly around 42–48 hours. Exact calibre can vary by reference; we’re happy to verify the movement in this specific watch on request.

Q: How do I operate the chronograph and set the time/date?
A: Use the upper pusher (around 2 o’clock) to start/stop the chronograph and the lower pusher (around 4 o’clock) to reset after stopping—never reset while the chronograph is running. To set the time, pull the crown to the time‑setting position and turn the hands; if the watch has a quickset date, use the intermediate crown position. Avoid changing the date between roughly 8pm and 2am. If your crown is screw‑down, unscrew it first and screw it back down firmly when finished.

Q: Is it water‑resistant and can I swim with it?
A: Many Diagono Chronograph models were originally rated to 100 metres, but water resistance on vintage/pre‑owned watches cannot be guaranteed without recent gasket replacement and pressure testing. Treat it as splash‑resistant unless freshly serviced and tested. Avoid swimming, showering or submersion, and always ensure the crown is fully secured before any moisture exposure.

Q: What crystal does it use, and is it scratch‑resistant?
A: Most Bvlgari Diagono Chronograph models are fitted with a sapphire crystal, which is highly scratch‑resistant. We can confirm the crystal specification on this exact piece upon request.

Q: What are the bezel and strap materials, and how should I care for them?
A: The bezel is black rubber with logo engraving, and the strap is black rubber with stainless‑steel link sections. Wipe surfaces with a soft, dry microfibre cloth; for light dirt on rubber, use a barely damp cloth and dry promptly. Avoid solvents, perfumes, chemicals, abrasive cleaners and prolonged UV exposure, which can mark rubber and steel finishes.

Q: Will it fit my wrist, and can the strap be adjusted?
A: This watch fits a wrist up to approximately 21 cm. Sizing can typically be adjusted by removing/adding the steel link sections; some Diagono rubber straps may also have modular segments or require authorised strap replacement for size changes. Share your wrist measurement and we’ll advise sizing options or sourcing of compatible parts (subject to availability).

Q: What does the reference DG42SV signify?
A: BVLGARI uses internal codes where “DG” denotes Diagono, “42” refers to the case size in millimetres, and “SV” commonly indicates stainless steel. We can confirm full reference details and movement information for this specific piece on request.

Q: What accuracy and service interval should I expect from an automatic chronograph?
A: A healthy Swiss automatic chronograph should keep good time, though performance varies with age and service history. A routine service every 4–6 years is sensible, or sooner if accuracy or water resistance is a concern. Keep the watch away from strong magnets, extreme heat and moisture, and wipe it clean after wear.

Q: What is included, and what warranty/shipping do you offer?
A: This listing is delivered with no accessories unless stated otherwise. A Retro Tale rigorously authenticates every item and guarantees 100% originality. All watches include a 12‑month mechanical guarantee. We offer free, fully insured DHL shipping, a 14‑day return policy, and 0% customs fees for EU buyers; please contact us for any specific delivery or warranty questions.

Bvlgari

Breguet