Which is cheaper, the Bremont Altitude 39 Date or the Hamilton Khaki Aviation Day Date Auto?

At MSRP the Hamilton Khaki Aviation Day Date Auto is the cheaper of the two at $1,125, against $4,250 for the Bremont Altitude 39 Date — a $3,125 gap before any retailer discounting.

Which is bigger, the Bremont Altitude 39 Date or the Hamilton Khaki Aviation Day Date Auto?

The Hamilton Khaki Aviation Day Date Auto wears larger at 42mm versus 39mm for the Bremont Altitude 39 Date — a 3mm difference across the dial.

Which has a longer power reserve, the Bremont Altitude 39 Date or the Hamilton Khaki Aviation Day Date Auto?

The Hamilton Khaki Aviation Day Date Auto carries a 80-hour power reserve against 40 hours on the Bremont Altitude 39 Date.

What movement does the Bremont Altitude 39 Date run compared to the Hamilton Khaki Aviation Day Date Auto?

Both watches run automatic movements — the Bremont Altitude 39 Date uses the BE-92AE and the Hamilton Khaki Aviation Day Date Auto uses the H-40.

Side by side

Bremont Altitude 39 DatevsHamilton Khaki Aviation Day Date Auto

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

Bremont Altitude 39 Date

alt39-dt-ss-si-l-s

MSRP $4,250

Hamilton Khaki Aviation Day Date Auto

h64645131

MSRP $1,125

At a glance

8 of 29 specs differ

Diameter

Altitude 39 Date39mm

Khaki Aviation Day Date Auto42mm

Power Reserve

Altitude 39 Date40h

Khaki Aviation Day Date Auto80h

Water Resistance

Altitude 39 Date100m

Khaki Aviation Day Date Auto100m

MSRP

Altitude 39 Date$4,250

Khaki Aviation Day Date Auto$1,125

Full specifications

Case

4 specs

Diameter

39mm

42mm

Thickness

11.19mm

12.15mm

Lug-to-Lug

—

46mm

Material

316L Stainless Steel (DLC coated)

Stainless Steel

Crystal & Dial

1 specs

Dial Color

Silver

Black

Movement

2 specs

Caliber

BE-92AE

H-40

Power Reserve

40h

80h

Pricing

1 specs

MSRP

$4,250

$1,125

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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 39 Date

Owners and reviewers widely praise the Bremont Altitude 39 Date as a sleek, legible, and everyday-suited pilot's watch, noting its comfortable 39mm 904L steel case and clean dial design. The La Joux-Perret G100 movement is recognized for its 68-hour power reserve and smooth winding feel. Some owners note the bracelet lacks micro-adjustments. On balance, the consensus is that the Bremont Altitude 39 Date is highly regarded for its refined finishing and wearability at 39mm.

Hamilton Khaki Aviation Day Date Auto

Owners and reviewers widely praise the Hamilton Khaki Aviation Day Date Auto for its handsome, legible dial with raised indices and day/date complications, and its versatile, modern pilot watch design. The fully brushed case and good lume are noted strengths, with one owner finding it wears comfortably on a NATO strap. The H-10 caliber offers an 80-hour power reserve, though its decoration and regulation are less refined. Some find the 42mm size large and the skeletonized hour hand tip visually unappealing, while others note the AR coating is decent but not exceptional. Overall, owners and reviewers rate the Hamilton Khaki Aviation Day Date Auto highly for its practical design and value at its price point.

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