Longines Spirit Zulu Time Green L3.812.4.63.6 vs Tudor Black Bay 58 GMT

SpecificationLongines Spirit Zulu Time Green L3.812.4.63.6Tudor Black Bay 58 GMT
BrandLonginesTudor
CollectionSpiritBlack Bay
ReferenceL3.812.4.63.6M7939N-0001
CategoryGMTGMT
Movement TypeAutomaticAutomatic
CaliberLongines L844.4MT5652
Power Reserve72h70h
Frequency25,200 vph28,800 vph
Case Diameter42.0mm39.0mm
Case Thickness14.5mm12.5mm
Case MaterialStainless SteelStainless Steel
CrystalSapphireSapphire
Water Resistance100m / 328ft200m / 656ft
Weight175g150g
MSRP$2,975$4,175
Market Price$2,600$4,500

In-Depth Comparison

The Longines Spirit Zulu Time Green L3.812.4.63.6 and the Tudor Black Bay 58 GMT represent two compelling options in the luxury watch market. Both timepieces have earned devoted followings among collectors and enthusiasts, but they approach horology from distinctly different perspectives. Let's break down how these two watches compare across the key dimensions that matter most to buyers.

Heritage And Brand Prestige

Longines and Tudor are both highly respected names in watchmaking. Both watches hail from Switzerland, benefiting from the region's deep horological tradition. This particular Spirit reference was introduced in 2023, while this Black Bay reference debuted in 2024. The Tudor Black Bay 58 GMT is the newer release, potentially featuring more modern technology and finishing.

Movement And Mechanics

At the heart of the Longines Spirit Zulu Time Green L3.812.4.63.6 beats the Longines L844.4 caliber offering a 72-hour power reserve running at 25,200 vph with 25 jewels. The Tudor Black Bay 58 GMT is powered by the MT5652 with a 70-hour power reserve operating at 28,800 vph featuring 26 jewels. The Longines Spirit Zulu Time Green L3.812.4.63.6 wins on power reserve with a 2-hour advantage, which means less frequent winding for those who rotate watches.

Dimensions And Wearability

The Longines Spirit Zulu Time Green L3.812.4.63.6 features a 42.0mm case at 14.5mm thick with a 49.0mm lug-to-lug measurement, crafted in Stainless Steel. The Tudor Black Bay 58 GMT comes in at 39.0mm and 12.5mm thick with 47.8mm lug-to-lug, constructed from Stainless Steel. The Tudor Black Bay 58 GMT wears more compactly on the wrist, making it potentially more suitable for smaller wrists or those who prefer understated proportions. At 150g, the Tudor Black Bay 58 GMT is the lighter of the two.

Materials And Construction

The Longines Spirit Zulu Time Green L3.812.4.63.6 uses a Sapphire crystal paired with a Fixed green ceramic bezel, while the Tudor Black Bay 58 GMT features Sapphire crystal with a Bidirectional rotating, black/burgundy aluminum insert bezel. On the wrist, the Longines Spirit Zulu Time Green L3.812.4.63.6 comes on a Stainless steel bracelet with Triple fold-over clasp, while the Tudor Black Bay 58 GMT is fitted with Stainless steel riveted bracelet featuring Folding clasp with safety lock.

Water Resistance And Capability

The Longines Spirit Zulu Time Green L3.812.4.63.6 is rated to 100m / 328ft and the Tudor Black Bay 58 GMT to 200m / 656ft. For water sports and diving, the Tudor Black Bay 58 GMT provides superior depth capability.

Pricing And Value

At retail, the Longines Spirit Zulu Time Green L3.812.4.63.6 lists for $2,975 compared to $4,175 for the Tudor Black Bay 58 GMT. The Longines Spirit Zulu Time Green L3.812.4.63.6 is the more accessible option at MSRP, saving $1,200 at retail. On the secondary market, the Longines Spirit Zulu Time Green L3.812.4.63.6 trades around $2,600 while the Tudor Black Bay 58 GMT commands approximately $4,500. The Tudor Black Bay 58 GMT carries a 8% market premium.

The Verdict

Choosing between the Longines Spirit Zulu Time Green L3.812.4.63.6 and the Tudor Black Bay 58 GMT ultimately comes down to personal priorities. For dress occasions and smaller wrists, the Tudor Black Bay 58 GMT is more versatile. Both watches are exceptional timepieces that will serve their owner well for generations. We recommend trying both on the wrist at an authorized dealer before making your final decision, as comfort and emotional connection are ultimately just as important as specifications.