Side by side

Citizen Atomic Perpetual A-TvsMonta 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

11 of 29 specs differ
Diameter
Atomic Perpetual A-T41mm
Atlas38.5mm
Power Reserve
Atomic Perpetual A-T40h
Atlas40h
Water Resistance
Atomic Perpetual A-T200m
Atlas152m
MSRP
Atomic Perpetual A-T
Atlas$2,150

Full specifications

Case

6 specs
Category
Pilot
GMT
Diameter
41mm
38.5mm
Thickness
12mm
Lug-to-Lug
46mm
47mm
Lug Width
20mm
Water Resistance
200m
152m

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Blue
Silver

Movement

2 specs
Caliber
H800
Monta M-23
Type
Solar
Automatic

Pricing

1 specs
MSRP
$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.

Citizen Atomic Perpetual A-T

Owners widely praise the Citizen Atomic Perpetual A-T for its handsome appearance, solid fit and finish, comfortable bracelet, and intuitive world time function. Its perpetual calendar and atomic timekeeping are highlighted as major conveniences, maintaining accuracy within 0.5 seconds even without syncing, and owners appreciate its "set & forget" nature and solar charging. The watch features a modest, stylish blue dial with delicate design details and a clutter-free layout, along with high water resistance without a screw-down crown and light titanium construction. Some find the dial unnecessarily busy, and its time zone functionality is noted as less useful outside the US, with atomic sync being less compelling below the equator. Accuracy is reported as +/-15 seconds per month if not syncing, but +/-0 seconds if it syncs via radio signal. Some find the watch a bit on the large side.

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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