Side by side

Citizen Atomic Perpetual A-TvsSeiko Diamond Collection

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

Diamond Collection
SeikoDiamond Collection
MSRP $525

At a glance

11 of 29 specs differ
Diameter
Atomic Perpetual A-T41mm
Diamond Collection32mm
Power Reserve
Atomic Perpetual A-T40h
Diamond Collection40h
Water Resistance
Atomic Perpetual A-T200m
Diamond Collection100m
MSRP
Atomic Perpetual A-T
Diamond Collection$525

Full specifications

Case

6 specs
Category
Pilot
Dress
Diameter
41mm
32mm
Thickness
12mm
8.2mm
Lug-to-Lug
46mm
39mm
Lug Width
20mm
15mm
Water Resistance
200m
100m

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Blue
Black

Movement

2 specs
Caliber
H800
6N32
Type
Solar
Automatic

Pricing

1 specs
MSRP
$525

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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.

Seiko Diamond Collection

Owners widely praise the Seiko Diamond Collection for its stunning beauty, particularly highlighting the 14 diamonds and the captivating mother-of-pearl dial. Its 33.2mm case size, 100m water resistance, sapphire crystal, and lightweight build are appreciated features contributing to comfortable wear. Some owners find the dial detail is best appreciated in direct sunlight. The gold plating on some models may show fading from desk work over time. Overall, owners rate the Seiko Diamond Collection highly for its dazzling aesthetics and comfortable, well-finished design at its price point.

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