Side by side

Citizen Atomic Perpetual A-TvsLongines SPIRIT ZULU TIME

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

SPIRIT ZULU TIME
LonginesSPIRIT ZULU TIME
MSRP $3,550

At a glance

23 of 29 specs differ
Diameter
Atomic Perpetual A-T41mm
SPIRIT ZULU TIME42mm
Power Reserve
Atomic Perpetual A-T40h
SPIRIT ZULU TIME72h
Water Resistance
Atomic Perpetual A-T200m
SPIRIT ZULU TIME100m
MSRP
Atomic Perpetual A-T
SPIRIT ZULU TIME$3,550

Full specifications

Case

9 specs
Category
Pilot
GMT
Diameter
41mm
42mm
Thickness
12mm
14.1mm
Lug-to-Lug
46mm
49.4mm
Lug Width
20mm
22mm
Material
Stainless Steel
Ceramic
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid

Crystal & Dial

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

Movement

8 specs
Caliber
H800
L844.4
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 and date, 24 hours hand with time zone mechanism

Pricing

1 specs
MSRP
$3,550

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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 SPIRIT ZULU TIME

Owners widely praise the Longines SPIRIT ZULU TIME for its refined finishing, attractive dial with gilt elements, and smooth winding action. Reviewers highlight its handsome and versatile design, with some noting the 39mm variant offers comfortable wearability. The L844.4 movement provides a 72-hour power reserve and COSC certification. Some owners find the bracelet lacks sufficient micro-adjustment and prefer a weightier feel, while others note the 41mm or 42mm case sizes may be large for smaller wrists. On balance, owners and reviewers rate the Longines SPIRIT ZULU TIME highly for its excellent finishing and appealing design at its price point.

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