Side by side

Monta AtlasvsSeiko Prospex Land Mechanical GMT

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

Atlas
MontaAtlas
MSRP $2,150
Prospex Land Mechanical GMT
SeikoProspex Land Mechanical GMT
MSRP $1,150

At a glance

13 of 29 specs differ
Diameter
Atlas38.5mm
Prospex Land Mechanical GMT39.5mm
Power Reserve
Atlas40h
Prospex Land Mechanical GMT72h
Water Resistance
Atlas152m
Prospex Land Mechanical GMT200m
MSRP
Atlas$2,150
Prospex Land Mechanical GMT$1,150

Full specifications

Case

5 specs
Diameter
38.5mm
39.5mm
Thickness
13.6mm
Lug-to-Lug
46.4mm
Lug Width
20mm
Water Resistance
152m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Silver
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Monta M-23
6R54
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$2,150
$1,150

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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.

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.

Seiko Prospex Land Mechanical GMT

Owners widely praise the Seiko Prospex Land Mechanical GMT for its faithful reconstruction of a classic design, comfortable bracelet, and attractive gray dial with a bubbly crystal. Reviewers highlight its handsome everyday sports watch appeal, solid specifications, and classic Seiko diver aesthetics, offering great value. However, community members are divided on the 6R movement's accuracy, with some reporting significant deviations even after regulation, while others find it competitive for the price. A point of contention is the GMT function, with some wishing for a "flyer" style local jump GMT instead of the "caller" type, and the internal compass bezel is described as finicky and difficult to read. Owners generally consider the Seiko Prospex Land Mechanical GMT overpriced at its retail price, suggesting better value is found on sale or closer to $700.

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