Side by side

Citizen Atomic Perpetual A-TvsLongines MASTER COLLECTION

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

MASTER COLLECTION
LonginesMASTER COLLECTION
MSRP $3,000

At a glance

22 of 29 specs differ
Diameter
Atomic Perpetual A-T41mm
MASTER COLLECTION42mm
Power Reserve
Atomic Perpetual A-T40h
MASTER COLLECTION72h
Water Resistance
Atomic Perpetual A-T200m
MASTER COLLECTION30m
MSRP
Atomic Perpetual A-T
MASTER COLLECTION$3,000

Full specifications

Case

8 specs
Category
Pilot
Diameter
41mm
42mm
Thickness
12mm
10.8mm
Lug-to-Lug
46mm
49.7mm
Lug Width
20mm
21mm
Finish
Brushed and polished
Water Resistance
200m
30m
Caseback
Solid
Transparent case back with sapphire crystal

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Dial Color
Blue
Silver
Indices
Applied
Painted Arabic numerals
Lume
None
Super-LumiNova

Movement

8 specs
Caliber
H800
L897.2
Type
Solar
Automatic
Beat Rate
28,800 vph
25,200 vph
Power Reserve
40h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds, month and date by annual calendar

Pricing

1 specs
MSRP
$3,000

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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.

Longines MASTER COLLECTION

The Longines Master Collection is widely praised for its excellent value, beautiful dial execution featuring engraved Breguet numerals and snailed subdials, and classic, vintage styling. Owners and reviewers highlight its dressy and thin profile, with one owner noting its versatility as a daily wear. The Master Collection offers complications like chronographs and moon phases at competitive price points, with some finding the case finishing homogenous and the pushers to feel cheap. Accuracy figures are not consistently reported across sources, but one owner notes a broken moon phase setting mechanism requiring professional service. Water resistance is considered light at 30m, and the bracelet lacks micro-adjustments. Overall, owners and reviewers rate the Longines Master Collection highly for its dial execution and value, particularly when purchased below retail.

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