Side by side

Citizen Atomic Perpetual A-TvsPhoibos Reef Master

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

Reef Master
PhoibosReef Master
MSRP $335

At a glance

11 of 29 specs differ
Diameter
Atomic Perpetual A-T41mm
Reef Master42mm
Power Reserve
Atomic Perpetual A-T40h
Reef Master40h
Water Resistance
Atomic Perpetual A-T200m
Reef Master200m
MSRP
Atomic Perpetual A-T
Reef Master$335

Full specifications

Case

5 specs
Category
Pilot
Diver
Diameter
41mm
42mm
Thickness
12mm
13mm
Lug-to-Lug
46mm
48mm
Lug Width
20mm
22mm

Crystal & Dial

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

Movement

2 specs
Caliber
H800
SII NH38
Type
Solar
Automatic

Pricing

1 specs
MSRP
$335

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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.

Phoibos Reef Master

Owners widely praise the Phoibos Reef Master for its exceptional value, highlighting its sapphire crystal, DLC coating, and extensive BGW9 lume. The watch is noted for its cool lume, with one owner finding it not bulky despite its robust build. The Shamrock Green dial and texture are highly praised, as is the comfortable bracelet with solid end links. However, the bezel action is described as rough, and the basic folding clasp is a disappointment. Accuracy is reported as excellent, with one owner seeing +-2 sec/day. Some find the 42mm size almost too big for their wrists, and the date window is considered too small. Overall, owners rate the Phoibos Reef Master highly for its impressive feature set and value at its price point.

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