Bremont Supermarine 500M Polar White
SM43-DT-SS-WH-B
- Case
- 43mm
- MSRP
- $4,350
- Movement
- Automatic
- Reserve
- 56h
VS
Building 1v1 comparison
Building 1v1 comparison
1v1 Watch Comparison
A focused side-by-side page for specs, fit, movement details, review notes, and enthusiast context.
SM43-DT-SS-WH-B
L3.795.4.59.9
Pair Review
Built from the saved specs and wearability notes for these two watches, then weighed against enthusiast priorities like fit, movement quality, practicality, finishing, value, and collector appeal.
Where it wins
Buyers prioritizing dive-spec seriousness and stronger tool-watch presence
Where it wins
Wearers who want a slightly smaller, thinner, more versatile fit
Both are automatic divers, but the Longines has the more relaxed technical spec on paper: 72-hour power reserve versus Bremont’s 56 hours, and a lower beat rate at 3.5 Hz versus 4 Hz. Bremont lists a specific caliber, BB64AH, with 25 jewels, while Longines does not yet list the caliber or jewels, which makes the Bremont’s movement more transparently documented. Neither watch has listed accuracy claims or certification data, so performance can’t be meaningfully compared beyond the published reserve and frequency. From the provided specs alone, Longines wins on endurance, Bremont wins on spec transparency. Winner: Tie
The Longines is slightly smaller at 42mm versus 43mm and slightly thinner at 12.85mm versus 13mm, which should make it the easier watch to wear on a broader range of wrists. Lug-to-lug is almost identical, with Bremont at 50mm and Longines at 50.1mm, so neither has a meaningful reach advantage. The Bremont’s 22mm lug width suggests a broader, more substantial stance, and the pre-existing wearability notes emphasize that it feels like a modern, refined, but still fairly large dive watch; the notes specifically call out its 43mm size and 50mm lug-to-lug as a tradeoff for buyers wanting something slimmer or lighter. No weight is listed for either watch, so that part of the comfort equation can’t be compared directly. Overall, Longines is the easier fit for more wrists, while Bremont offers the bolder presence. Winner: Longines Legend Diver 59
The Bremont has the more vivid and technically focused dial, with a white 3D wave-pattern design, black gold hands, strong legibility per the wearability notes, and a domed anti-reflective sapphire crystal. The Longines counters with a black grained dial, painted Arabic numerals and indexes, Swiss Super-LumiNova, and AR coating on both sides of the sapphire crystal, which should aid practical readability in more conditions. Bremont is the tougher watch on paper for water use at 500m and adds a helium escape valve, while Longines is still very capable at 300m but lacks the same extreme-diver credentials. The Longines has an internal turning diving flange, which adds heritage and charm but is less straightforward than Bremont’s more overt tool-watch construction; however, Bremont’s bracelet and clasp are more fully described in the wearability notes as an improvement for comfort and daily usability, with micro-adjustment emphasized. Bremont looks stronger for pure sport use and high-impact practicality, while Longines looks more versatile and classic for everyday wear. Winner: Bremont Supermarine 500M Polar White
MSRP is close, with Longines at $4,100 and Bremont at $4,350, so price alone does not create a decisive gap. The Bremont brings more visibly specified engineering—904L steel, 500m water resistance, helium escape valve, and a decorated closed case back—plus the pre-existing note that this generation feels more cohesive and premium than earlier Supermarine models. The Longines offers a well-known heritage line in the Legend Diver family, a longer power reserve, and a more approachable, classic diver format, but some core movement specifics are not yet listed. For collectors, Bremont’s stronger technical positioning and more distinctive dial execution increase enthusiast appeal, while Longines likely has the edge in broader ownership practicality thanks to its more moderate dimensions and simpler, more timeless presentation. On the provided data, value is a close call rather than a clear upset. Winner: Tie
Compared
SM43-DT-SS-WH-B
L3.795.4.59.9