10h09.com
The verdict, firstCyril Favre

Buy the Tangente 38 to spend less and wind by hand; buy the neomatik 39 for automatic convenience and — despite its bigger dial — a shorter footprint on the wrist.

Both watches share the same dial language, the same brand, and a difference in diameter of exactly one millimetre — 37.5 mm against 38.5 mm. On paper that should make this an easy call. On the wrist it isn't, because the neomatik 39's case measures 47.3 mm from lug to lug, while the hand-wound 38 measures 47.7 mm. The watch NOMOS markets as bigger is the one that actually wears shorter.

The Tangente 38 remains the more complete hand-wound argument: an unobstructed view of the Alpha calibre through a sapphire back, roughly 53% less money, and the winding ritual some buyers actively want. The neomatik 39 argues back with grab-and-go convenience, a genuine in-house automatic, and — the detail most buyers miss — the slightly shorter case. Neither is a compromise; they solve different problems.

NOMOS Glashütte Tangente, 37mmNOMOS Glashütte · ~$2,400TangenteNOMOS Glashütte Tangente Neomatik 39, 38mmNOMOS Glashütte · ~$3,650Tangente Neomatik 39
The other case

The case for the neomatik 39 is stronger than 'it's the automatic one.' Its DUW 3001 calibre is only 3.2 mm tall, which is why the automatic case barely outgrows the hand-wound one in thickness; its dial has more room for the same index-and-track layout, reading faster at a glance; and it is rated to 5 ATM against the 38's 3 ATM, a real if modest margin for everyday knocks. Buyers who tried the 38 and found the daily wind a chore, or who want the most current Tangente on the market, have a genuine case — not just a bigger price tag to justify.

Where it is decided
4 arguments
01

Proportion and the length inversion

Diameter says the neomatik 39 is bigger; lug to lug says the opposite. The hand-wound 38 measures 47.7 mm from tip to tip, the automatic 39 measures 47.3 mm — a 0.4 mm gap that inverts the size hierarchy the model names imply. Both figures come from NOMOS's published case dimensions rather than this catalogue, since lug-to-lug isn't listed on the retail spec sheet directly; treat them as the best available reference rather than an in-house measurement. On a wrist where 47-48 mm is the ceiling, choosing 39 over 38 for 'more room' can backfire.

Goes to
NOMOS Glashütte Tangente Neomatik 39
37.5 mm, 47.7 mm lug-to-lug
38.5 mm, 47.3 mm lug-to-lug
02

Movement and daily ritual

Both calibres are NOMOS in-house and both hold roughly 43 hours of reserve, so capacity isn't the differentiator. The Alpha/DUW 4001 in the 38 is hand-wound, 17 jewels, and viewable unobstructed through a sapphire back — a deliberate daily ritual some buyers value and others find a chore. The neomatik 39's DUW 3001 is automatic, 27 jewels, and only 3.2 mm tall, remarkably thin for a self-winding calibre, but its rotor partially covers the movement through the display back. Neither is more capable; they ask something different of the owner.

Goes to
Draw
Alpha/DUW 4001, hand-wound, ~43h, 17 jewels
DUW 3001, automatic, ~43h, 27 jewels, 3.2 mm tall
03

Caseback, water resistance and dial presence

With a sapphire back, the 38 stands 6.8 mm tall; the neomatik 39 in a steel-back configuration stands 6.9 mm — near enough to a wash for wrist comfort. The 39 carries a 5 ATM rating against the 38's 3 ATM; both are firmly in splash-and-rain territory rather than swimming, so the practical gap is smaller than the numbers suggest. What the extra dial room does buy is presence: the same clean baton-and-track layout reads faster at a glance on the 39, at some cost to the closer, more intimate scale of the 38. Neither dial carries luminous material, which matters if either is meant as an everyday, low-light watch.

Goes to
Draw
6.8 mm (sapphire back), 3 ATM
6.9 mm (steel back), 5 ATM
04

Price and ownership cost

In the configurations compared here, the hand-wound 38 (ref. 164, sapphire back) lists at $2,398; the neomatik 39 (ref. 140) at $3,672 — a conversion of NOMOS's own EUR list prices, so treat both as directional rather than exact at checkout. The automatic costs roughly 53% more for a shorter case and no unobstructed view of the movement. That premium buys real things: an in-house automatic calibre and a little more everyday water tolerance. It doesn't buy a bigger watch on the wrist, which is the assumption most buyers bring to this decision before they check the lug-to-lug figures.

Goes to
NOMOS Glashütte Tangente
$2,398 (ref. 164)
$3,672 (ref. 140)
Who should buy which
NOMOS Glashütte Tangente
  • You want the lower price and the clearest possible view of a hand-wound NOMOS calibre.
  • Winding a watch each morning is a small ritual you enjoy, not friction you're trying to avoid.
  • Your wrist is on the narrower side and 47.7 mm is genuinely the longest case you're willing to accept — so you've checked it fits before assuming '38' means 'smaller.'
  • You'd rather buy the sapphire-back reference and watch the Alpha calibre work than pay for an automatic rotor that partly hides it.
See the Tangente
NOMOS Glashütte Tangente Neomatik 39
  • You want automatic convenience and don't want to think about winding before you put the watch on.
  • You tried a 38 mm hand-wound Tangente and, once you checked the actual lug-to-lug, found the neomatik 39 the shorter fit.
  • You want the most contemporary Tangente on the market and a dial with slightly more room and faster legibility.
  • The roughly 53% price premium over the hand-wound 38 doesn't change your decision — you're buying the in-house automatic and the 5 ATM rating on their own terms.
See the Tangente Neomatik 39
Your personal verdict

Diameter says the neomatik 39 is bigger. Lug-to-lug, winding preference and budget are what actually decide between these two.

Find the Tangente size that fits you
Explore Tangente sizes

NOMOS sells the Tangente name across seven distinct size-and-movement combinations, from the 35 mm hand-wound original to the 42 mm Tangente Sport neomatik. A different size or suffix often means a different movement or water-resistance rating, not just a wider dial — the 'neomatik 38 Update' and the 'neomatik 39' are not the same watch, despite the near-identical diameter.

35 mm — Hand-Wound
35 mm — neomatik
38 mm — Hand-Wound
38.5 mm — neomatik 39
38.5 mm — neomatik 38 Update
40.5 mm — neomatik 41 Update
42 mm — Sport neomatik
Frequently asked

Is the NOMOS Tangente 38 too big for a small wrist?

Not on diameter alone — 37.5 mm is a modest size by any modern standard. The real risk is length: at 47.7 mm lug to lug, the 38 is the longest watch in this comparison, so it can overhang a narrow or flat wrist even though the case itself reads small. Check lug-to-lug against a watch you already own before assuming '38 mm' is automatically safe.

Is the NOMOS Tangente 35 too small?

Not inherently. At roughly 45 mm lug to lug it wears closer to a conventional 36-37 mm watch than its 35.0 mm diameter suggests, and it stays truest to the Tangente's original 1992 proportions. Whether it reads as appropriately compact or too delicate depends on wrist width and how formal your wardrobe runs, more than on the diameter alone.

Is the neomatik 39 worth the premium over the hand-wound 38?

It depends what you're paying for. The roughly 53% premium buys a thinner-than-expected in-house automatic calibre, a 5 ATM water-resistance rating instead of 3 ATM, and — despite the bigger dial — a very slightly shorter case. It doesn't buy a bigger watch on the wrist. If automatic convenience and that small water-resistance margin matter to you, it's a reasonable premium; if you're paying for size alone, the assumption doesn't hold.

Can you swim with a NOMOS Tangente?

No. Both the Tangente 38 (3 ATM) and the neomatik 39 (5 ATM) are splash-and-rain resistant at best — fine for washing your hands or getting caught in the rain, not for swimming, showering or diving.

Tangente 38 vs neomatik 39 for a 17 cm wrist?

A 17 cm wrist circumference with an average, moderately rounded profile can usually carry either — both sit in the same 47-48 mm lug-to-lug class, so if one overhangs, the other likely will too. On a flatter or narrower 17 cm wrist, the 0.4 mm the neomatik 39 saves is real but marginal; the decision is better made on winding preference and budget than on length alone.

What is the actual diameter of the NOMOS Tangente 38?

37.5 mm, not 38 mm. NOMOS rounds the model name up from the case's true measurement, the same way the 'neomatik 39' is actually 38.5 mm. Always check the manufacturer's stated diameter rather than the model name when comparing case sizes.