The DELMA Oceanmaster Lume pairs a fully luminous dial with hands and indexes that Monochrome Watches reviewer Denis Peshkov says remain easy to distinguish after a few hours in complete darkness. That is a useful qualitative observation, not a measured brightness test or proof of legibility in every sailing condition.
How legible is the Oceanmaster Lume at night?
The key design choice is that the dial glows too—not only the hands and hour markers. DELMA specifies a full-lume Super-LumiNova dial, BGW9 on the applied indexes, and SLN C1 on the hour and minute hands. Monochrome’s review describes the hands and indexes as glowing more brightly in a different hue from the dial, creating contrast against the luminous background.
After a few hours in complete darkness, Peshkov reports, “The hands remain dominant even after a few hours of complete darkness, exactly the behaviour you want when you come off a night tack.” He also found the luminous tip of the central seconds hand easy to pick up. These are observations from the review sample, rather than results from a controlled or timed test.
DELMA’s product page and the review give no measured brightness, lume-decay curve, charging protocol, or controlled comparison. They do not establish how the watch performs under red chart lighting, in spray, or in a particular cockpit. The evidence supports a specific claim—one reviewer found the hands distinguishable against the glowing dial after hours in darkness—not an all-night or all-conditions guarantee.
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errors#1 Best Overall
- Iconic Promaster watches with advanced functions designed to venture to the deepest depths.
- 3 Hand, Date
- Silver-Tone Stainless Steel
- Luminous Hands and Markers and Anti-Reflective Mineral Crystal
- Featuring our Eco-Drive technology – powered by light, any light. 200 Meters Water Resistant and 5 Year Limited Warranty
What the sailing features do
DELMA describes the Oceanmaster Lume as a sailing watch, with a stainless-steel nautical bezel and a tactical planner. Monochrome explains how the bezel and dial can be used together to relate course, wind direction, and points of sail. They are watch-based aids for a sailing workflow, not replacements for navigation equipment or situational judgment.
Specifications and a case-size discrepancy
DELMA’s blue product listing identifies the watch as SKU 41701.670.6.199 and gives these specifications. The independent review agrees on the thickness and lug-to-lug length but reports a different case diameter.
Rank #2
- Iconic Promaster watches with advanced functions designed to venture to the deepest depths.
- 3 Hand, Date
- Silver-Tone Stainless Steel
- Luminous Hands and Markers and Mineral Crystal
- Sustainably powered by any light, with our Eco-Drive technology this watch never needs a battery. ISO Certified, 200M Water Resistant and 5 Year Limited Warranty
| Specification | Published detail |
|---|---|
| Case diameter | 41 mm, according to DELMA’s blue product page; 44 mm, according to Monochrome’s October 29, 2025 review. The sources conflict. |
| Case height | 13.8 mm, stated by DELMA and Monochrome Watches. |
| Lug-to-lug | 51 mm, stated by DELMA and Monochrome Watches. |
| Lug width | 24 mm, according to DELMA. |
| Movement and reserve | Sellita SW200-1 automatic; 41-hour power reserve, according to DELMA. |
| Movement frequency and jewels | 28,800 A/h and 26 jewels, according to DELMA. |
| Water resistance | 500 m / 1,650 ft / 50 ATM, according to DELMA. |
| Other listed construction | Stainless-steel bracelet, sapphire crystal with anti-reflective coating, and unidirectional nautical bezel, according to DELMA. |
The published diameter figures cannot be reconciled from these sources, so a buyer should not treat either one as a settled measurement. The 51 mm lug-to-lug figure is consistent, but wrist fit also depends on case shape and how the bracelet articulates.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Product history and availability
In its August 28, 2025 launch article, DELMA says the full-lume dial debuted in partnership with Oliver Heer Ocean Racing and accompanied skipper Oliver Heer during the 2024 Vendée Globe. This is the brand’s account of the watch’s history, not independent verification of its night performance during the race.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Rank #3
- Movement: ST2500
- Diameter: 44.5mm
- Thickness: 13mm
- Strap width: 22mm
- Water Resistance: 100m
When the product pages were checked, DELMA listed the blue variant at $1,750 and marked it out of stock; the orange variant was also listed at $1,750 and marked in stock. These are variant-specific snapshots, not a guarantee of current price or availability. DELMA’s pages also state free worldwide express shipping, free 30-day returns, and a two-year international warranty, with registration said to extend coverage to three years. Confirm current terms and whether they apply in your region before ordering.
Quick Recap
Rank #4
- GMT - With its sophisticated tonal GMT index and prominent red triangle GMT hand, this watch can be set to track a second time zone.
- Stainless Steel - The durable stainless-steel case and bracelet are resistant to corrosion, rust, and daily wear and tear.
- Date Window - Easily track the date in a dedicated window beside 3 o'clock.
- Thoughtfully Detailed - This watch features a vintage-style domed acrylic crystal, a lustrous sunray dial, and faceted markers.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
