Nomos Ahoi Neomatik Atlantic Date vs Seiko Prospex Street Series Tuna S23629

SpecificationNomos Ahoi Neomatik Atlantic DateSeiko Prospex Street Series Tuna S23629
BrandNomosSeiko
CollectionAhoiProspex
Reference561S23629
CategoryDiveDive
Movement TypeAutomaticSolar
CaliberDUW 6101V157
Power Reserve42hN/A
Frequency21,600 vphN/A
Case Diameter40.3mm46.7mm
Case Thickness10.7mm12.6mm
Case MaterialStainless SteelStainless Steel with shroud
CrystalSapphireHardlex
Water Resistance200m / 656ft200m / 656ft
Weight58g145g
MSRP$4,200$425
Market Price$3,600$340

In-Depth Comparison

The Nomos Ahoi Neomatik Atlantic Date and the Seiko Prospex Street Series Tuna S23629 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

Nomos and Seiko are both highly respected names in watchmaking. The Nomos Ahoi Neomatik Atlantic Date comes from Germany, while the Seiko Prospex Street Series Tuna S23629 originates from Japan. This particular Ahoi reference was introduced in 2022, while this Prospex reference debuted in 2022.

Movement And Mechanics

At the heart of the Nomos Ahoi Neomatik Atlantic Date beats the DUW 6101 caliber offering a 42-hour power reserve running at 21,600 vph with 33 jewels. The Seiko Prospex Street Series Tuna S23629 is powered by the V157.

Dimensions And Wearability

The Nomos Ahoi Neomatik Atlantic Date features a 40.3mm case at 10.7mm thick with a 47.0mm lug-to-lug measurement, crafted in Stainless Steel. The Seiko Prospex Street Series Tuna S23629 comes in at 46.7mm and 12.6mm thick with 50.0mm lug-to-lug, constructed from Stainless Steel with shroud. The Nomos Ahoi Neomatik Atlantic Date wears more compactly on the wrist, making it potentially more suitable for smaller wrists or those who prefer understated proportions. At 58g, the Nomos Ahoi Neomatik Atlantic Date is the lighter of the two.

Materials And Construction

The Nomos Ahoi Neomatik Atlantic Date uses a Sapphire crystal paired with a Fixed bezel, while the Seiko Prospex Street Series Tuna S23629 features Hardlex crystal with a Rotating bezel. On the wrist, the Nomos Ahoi Neomatik Atlantic Date comes on a Textile strap with Buckle, while the Seiko Prospex Street Series Tuna S23629 is fitted with Silicone strap featuring Buckle.

Water Resistance And Capability

The Nomos Ahoi Neomatik Atlantic Date is rated to 200m / 656ft and the Seiko Prospex Street Series Tuna S23629 to 200m / 656ft. Both watches share the same water resistance rating, making them equally suited for aquatic activities.

Pricing And Value

At retail, the Nomos Ahoi Neomatik Atlantic Date lists for $4,200 compared to $425 for the Seiko Prospex Street Series Tuna S23629. The Seiko Prospex Street Series Tuna S23629 is the more accessible option at MSRP, saving $3,775 at retail. On the secondary market, the Nomos Ahoi Neomatik Atlantic Date trades around $3,600 while the Seiko Prospex Street Series Tuna S23629 commands approximately $340.

The Verdict

Choosing between the Nomos Ahoi Neomatik Atlantic Date and the Seiko Prospex Street Series Tuna S23629 ultimately comes down to personal priorities. For value-conscious buyers, the Seiko Prospex Street Series Tuna S23629 delivers excellent quality at a lower price point. 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.