Side by side

Citizen Atomic Perpetual A-TvsPhoibos Leviathan

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

Leviathan
PhoibosLeviathan
MSRP $399

At a glance

10 of 29 specs differ
Diameter
Atomic Perpetual A-T41mm
Leviathan40mm
Power Reserve
Atomic Perpetual A-T40h
Leviathan40h
Water Resistance
Atomic Perpetual A-T200m
Leviathan200m
MSRP
Atomic Perpetual A-T
Leviathan$399

Full specifications

Case

4 specs
Category
Pilot
Diver
Diameter
41mm
40mm
Thickness
12mm
13mm
Lug-to-Lug
46mm
48mm

Crystal & Dial

3 specs
AR Coating
Underside
Yes
Dial Color
Blue
Black
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
H800
SII NH35
Type
Solar
Automatic

Pricing

1 specs
MSRP
$399

Follow this matchup

Get a note when Citizen Atomic Perpetual A-T vs Phoibos Leviathan gets more votes, a community discussion, or a price drop. No account needed.

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.

Phoibos Leviathan

Owners widely praise the Phoibos Leviathan for its excellent value, superb case finishing, and generous lume. The watch is described as visually striking, legible, and well-made, with a unique case design, sapphire crystal, and a comfortable FKM strap or excellent bracelet with a milled clasp and quick adjustments. Some owners note the bezel's staggered jimping can cause fingers to slip, and the beveled crystal can distort the view of indices. Accuracy varies, with one owner reporting losing 5-10 seconds per day without a winder, while others state it keeps accurate time out of the box. The watch is frequently described as heavy and thick, with some owners finding it too large for wrists smaller than 7.5 inches, although newer models feature an improved clasp for better comfort and functionality. Overall, owners rate the Phoibos Leviathan highly for its striking design and impressive finishing at an accessible price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.