Side by side

NOMOS Glashütte Ahoi neomatik siren bluevsMonta Atlas

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Atlas
MontaAtlas
MSRP $2,150

At a glance

17 of 29 specs differ
Diameter
Ahoi neomatik siren blue36.3mm
Atlas38.5mm
Power Reserve
Ahoi neomatik siren blue43 hoursh
Atlas40h
Water Resistance
Ahoi neomatik siren blue200m
Atlas152m
MSRP
Ahoi neomatik siren blue$4,540
Atlas$2,150

Full specifications

Case

8 specs
Category
Tool
GMT
Diameter
36.3mm
38.5mm
Thickness
9.6mm
Lug-to-Lug
45.5mm
Lug Width
18mm
Finish
Brushed and polished
Water Resistance
200m
152m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Blue
Silver
Indices
Applied

Movement

4 specs
Caliber
DUW 3001
Monta M-23
Beat Rate
21,600 vph
28,800 vph
Power Reserve
43 hoursh
40h
Jewels
27
25

Pricing

1 specs
MSRP
$4,540
$2,150

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

NOMOS Glashütte Ahoi neomatik siren blue

Owners and reviewers widely praise the NOMOS Glashütte Ahoi neomatik siren blue for its vibrant siren blue dial, which pops in any light, and its Bauhaus design language with arresting simplicity. The subtle rose gold accents, neon orange details, and color-matched date window at 6 o'clock are noted as well-thought-out elements. The slim 9.8mm case and 200m water resistance are also highlighted. However, the lume on the hour markers is considered weak and fades quickly, and the watch is not a true ISO-certified diver due to the lack of a dive bezel. Some find the textile strap too casual for anything beyond sophisticated casual wear, and the straight lugs can create a large feel on the wrist. The DUW 3001 movement offers a 43-hour power reserve. On balance, owners and reviewers rate the NOMOS Glashütte Ahoi neomatik siren blue highly for its striking dial and refined, yet casual, aesthetic.

Monta Atlas

The Monta Atlas is widely praised for its exceptional wearability, with its comfortable 38.5mm case size and buttery bracelet frequently highlighted. Owners and reviewers alike commend its fit and finish, noting a mix of brushed, polished, and blasted surfaces. However, the rehaut on the opaline silver dial is considered nearly illegible for the 24-hour GMT scale, leading some to suggest other dial colors are more practical for GMT functionality. One owner also flagged the crown as less sturdy than anticipated and noted the AR coating attracts fingerprints. Overall, owners and reviewers rate the Monta Atlas highly for its comfortable dimensions and appealing finishing.

From video reviewers

The Monta Opalin Silver's dial is a notable strength, particularly its subtle gradient effect that adds depth to the watch without being too flashy. The watch offers a notable value proposition due to its movement, typically found in more expensive timepieces. The bracelet can be prone to rattle, which might be a trade-off for some buyers.

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