Side by side

Citizen Atomic Perpetual A-TvsSternglas Naos Großdatum

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

Naos Großdatum
SternglasNaos Großdatum
MSRP $323

At a glance

13 of 29 specs differ
Diameter
Atomic Perpetual A-T41mm
Naos Großdatum38mm
Power Reserve
Atomic Perpetual A-T40h
Naos Großdatum
Water Resistance
Atomic Perpetual A-T200m
Naos Großdatum50m
MSRP
Atomic Perpetual A-T
Naos Großdatum$323

Full specifications

Case

5 specs
Category
Pilot
Dress
Diameter
41mm
38mm
Thickness
12mm
10mm
Lug-to-Lug
46mm
42mm
Water Resistance
200m
50m

Crystal & Dial

3 specs
AR Coating
Underside
Inner
Dial Color
Blue
Lume
None
Luminova Punkten

Movement

4 specs
Caliber
H800
Seiko VJ76
Type
Solar
Quartz
Power Reserve
40h
Jewels
25

Pricing

1 specs
MSRP
$323

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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.

Sternglas Naos Großdatum

The Sternglas Naos Großdatum is praised for its Bauhaus aesthetic and value, with one owner finding it an affordable alternative to other designs. However, some owners report it feels underwhelming and cheap, with a printed-on face, small font, and toy-like hands, and find the strap to be of poor quality. The watch features a 38mm stainless steel case, an Alabaster dial with beige LumiNova, and a Seiko TMI VJ76 quartz movement rated for -20/+20 seconds per month. On balance, owners and reviewers are divided, with the primary point of contention being the perceived quality and aesthetic execution of the Sternglas Naos Großdatum.

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