Q: Is this the quartz or automatic Seamaster 300M?
A: This reference 212.30.41.61.01.001 is the quartz 41 mm Seamaster Diver 300M, powered by Omega calibre 1538. It features a jumping hour hand for quick time‑zone changes and a battery end‑of‑life indicator.

Q: How long does the battery last and how will I know when to replace it?
A: Typical battery life is around 3.5 years. When the battery is low, the seconds hand will jump in multi‑second steps (commonly 4‑second intervals). Replace the battery promptly and ask for a water‑resistance test and gasket check at the same time.

Q: Can I swim or dive with this watch?
A: The Diver 300M is rated to 300 metres and is suitable for swimming and recreational diving when the crown and helium valve are fully screwed in and the seals are healthy. As seals age, water resistance can diminish, so have it pressure‑tested periodically (especially before water use) and rinse with fresh water after the sea. Avoid hot tubs, saunas and very hot showers as heat and detergents can stress gaskets.

Q: What does the helium escape valve do, and do I need to use it?
A: The manual helium escape valve at roughly the 10 o’clock position is for professional saturation diving to release built‑up helium during decompression. Most owners will never need to use it—keep it closed for everyday wear in and around water.

Q: What are the key measurements and fit?
A: Case diameter 41 mm; thickness about 11.8 mm; lug width 20 mm. This example fits a wrist up to approximately 19 cm as currently sized. Extra links or alternative straps can be sourced if you need a larger fit—please contact us for assistance.

Q: Is the bezel ceramic on this model?
A: No. This reference predates the ceramic‑bezel update introduced on later Seamaster 300M models. It has the earlier generation unidirectional black timing bezel; light wear on the insert is normal with age and use.

Q: What crystal and dial does it have?
A: It uses a domed, scratch‑resistant sapphire crystal with anti‑reflective treatment and the signature black wave dial with a date at 3 o’clock for excellent legibility underwater and in low light.

Q: How accurate is the calibre 1538?
A: Quartz accuracy is typically within seconds per month in normal conditions, often around ±15 seconds per month, with many well‑maintained examples performing even tighter. If you notice unusual drift, schedule a check‑up or battery/service visit.

Q: How do I set the date on this quartz model?
A: The calibre 1538 uses a jumping hour hand rather than a separate quick‑set date. Advance the hour hand forward past midnight to change the date (repeat as needed). Do not force the crown; if unsure, a watchmaker can demonstrate the setting procedure for you.

Q: What is included with this watch?
A: Everything that comes with the watch is listed under product information on this page. For this piece, the listing shows it includes its box. If an item (such as cards or manuals) is not listed there, it is not included—feel free to ask us to confirm.

Q: How do you authenticate this watch?
A: Every item at A Retro Tale is rigorously vetted by our in‑house experts using multi‑point checks of case, movement, dial, hands, crystal, and serial/reference engravings. We stand behind the authenticity of all items and can share additional product information on request.

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