Side by side

Bremont Altitude Perpetual Calendar GMTvsCitizen Atomic Perpetual A-T

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

Altitude Perpetual Calendar GMT
BremontAltitude Perpetual Calendar GMT
MSRP $38,450

At a glance

11 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Atomic Perpetual A-T41mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Atomic Perpetual A-T40h
Water Resistance
Altitude Perpetual Calendar GMT
Atomic Perpetual A-T200m
MSRP
Altitude Perpetual Calendar GMT$38,450
Atomic Perpetual A-T

Full specifications

Case

7 specs
Category
GMT
Pilot
Diameter
42mm
41mm
Thickness
12.65mm
12mm
Lug-to-Lug
46mm
Lug Width
22mm
20mm
Material
Titanium
Stainless Steel
Water Resistance
200m

Crystal & Dial

1 specs
AR Coating
Inner
Underside

Movement

2 specs
Caliber
H800
Type
Automatic
Solar

Pricing

1 specs
MSRP
$38,450

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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.

Bremont Altitude Perpetual Calendar GMT

The Bremont Altitude Perpetual Calendar GMT is a highly exclusive piece, with one owner noting its $44,000 price point raises questions about its target audience and suggesting it may be a limited production showpiece. Reviewers highlight its refined Trip-Tick case, now featuring softer curves, a 42mm diameter, and a 12.23mm thickness in grade 2 titanium, though the oversized crowns are flagged as a potential drawback. Overall, owners and reviewers acknowledge the Bremont Altitude Perpetual Calendar GMT as a distinctive, albeit niche, high-complication offering with a notable case refinement.

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.

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