Side by side

Bremont ionBirdvsHamilton Khaki Field Mechanical Power Reserve

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

ionBird
BremontionBird
MSRP $5,800
Khaki Field Mechanical Power Reserve
HamiltonKhaki Field Mechanical Power Reserve
MSRP $1,025

At a glance

11 of 29 specs differ
Diameter
ionBird43mm
Khaki Field Mechanical Power Reserve40mm
Power Reserve
ionBird40h
Khaki Field Mechanical Power Reserve40h
Water Resistance
ionBird
Khaki Field Mechanical Power Reserve100m
MSRP
ionBird$5,800
Khaki Field Mechanical Power Reserve$1,025

Full specifications

Case

7 specs
Category
Pilot
Field
Diameter
43mm
40mm
Thickness
11.95mm
Lug-to-Lug
48mm
Lug Width
20mm
Material
Titanium
Stainless Steel
Water Resistance
100m

Crystal & Dial

1 specs
Dial Color
Regular length (15cm - 19cm wrist size)
White

Movement

2 specs
Caliber
H-23
Type
Automatic
Manual

Pricing

1 specs
MSRP
$5,800
$1,025

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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 ionBird

Owners report the Bremont ionBird is overpriced and features a printed dial with a poorly placed date window at 4:30, which some find visually disruptive. However, some owners suggest its case finishing is superior to competitors. The 43mm titanium Bremont ionBird GMT is powered by a COSC-certified BE-93-2AV automatic movement and retails for $5,795. On balance, owners and reviewers find the Bremont ionBird's date window placement and price point to be significant drawbacks.

Hamilton Khaki Field Mechanical Power Reserve

The Hamilton Khaki Field Mechanical Power Reserve is noted for its 40mm sandblasted case, filling a size gap in the Khaki Field line. It features a new H-23 hand-wound movement with an 80-hour power reserve and a functional power reserve indicator at 9 o'clock. The case is 11.95mm thick, which is described as noticeably thicker than other Khaki Field models, and its proportions differ from classic manual-wind versions. The movement includes a slipping spring to resynchronize the power reserve indicator after shocks. Overall, reviewers appreciate the addition of the power reserve complication to the hand-wound model, though one reviewer noted a preference for a contrasting color on the indicator.

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