Side by side

Bremont Altitude Perpetual Calendar GMTvsHamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono

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

10 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Khaki Aviation Khaki Pilot Pioneer Auto Chrono41mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Khaki Aviation Khaki Pilot Pioneer Auto Chrono60h
Water Resistance
Altitude Perpetual Calendar GMT
Khaki Aviation Khaki Pilot Pioneer Auto Chrono100m
MSRP
Altitude Perpetual Calendar GMT$38,450
Khaki Aviation Khaki Pilot Pioneer Auto Chrono$1,995

Full specifications

Case

6 specs
Category
GMT
Chronograph
Diameter
42mm
41mm
Thickness
12.65mm
16mm
Lug-to-Lug
46mm
Material
Titanium
Stainless Steel
Water Resistance
100m

Crystal & Dial

1 specs
Dial Color
Blue
Beige

Movement

2 specs
Caliber
H-31
Power Reserve
40h
60h

Pricing

1 specs
MSRP
$38,450
$1,995

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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.

Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono

Owners widely praise the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono for its excellent dial legibility and unique, vintage-inspired design, with some noting its thinness and 72-hour power reserve. Reviewers highlight its charismatic, function-forward military aesthetic and attractive dial execution. The watch is considered a wise starting point for a chronograph under $2,000, with observed accuracy around +/- 4 seconds per day and a 60-hour power reserve. Some owners find the non-screw-down crown limits water confidence, and one reviewer notes the mineral crystal scratches more easily than sapphire. The price is considered a bit punchy by one source. On balance, owners and reviewers rate the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono highly for its handsome, utilitarian design and value.

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