Side by side

Citizen Series 8 831vsMonta Atlas

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

Series 8 831
CitizenSeries 8 831
MSRP $1,095
Atlas
MontaAtlas
MSRP $2,150

At a glance

11 of 29 specs differ
Diameter
Series 8 83140mm
Atlas38.5mm
Power Reserve
Series 8 83142h
Atlas40h
Water Resistance
Series 8 831100m
Atlas152m
MSRP
Series 8 831$1,095
Atlas$2,150

Full specifications

Case

6 specs
Category
Sport
GMT
Diameter
40mm
38.5mm
Thickness
12mm
Lug-to-Lug
46mm
47mm
Lug Width
20mm
Water Resistance
100m
152m

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Green
Silver

Movement

2 specs
Caliber
9051
Monta M-23
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$1,095
$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 Series 8 831

Owners widely praise the Citizen Series 8 831 for its finishing, with one owner noting it exceeded expectations. Reviewers highlight the textured Ice Blue dial and the bracelet's play of light, contributing to a comfortable and luxurious feel on the wrist. The watch features a 40mm ion-plated stainless steel case, a sapphire crystal, and 100 meters of water resistance. It is powered by the in-house Miyota Caliber 9051 automatic movement, which has a 42-hour power reserve and an accuracy range of -10 to +20 seconds per day. On balance, owners and reviewers rate the Citizen Series 8 831 highly for its impressive finishing and dial design at its price point.

From video reviewers

The case finishing, with its contrasting brushed and polished surfaces, is a notable strength. The 40mm case size and comfortable fit are also consistently mentioned. Reviewers did not reach a consensus on any weaknesses.

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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