Side by side

Hamilton Khaki Field Titanium AutovsTimefactors Speedbird PRS-51

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

Khaki Field Titanium Auto
HamiltonKhaki Field Titanium Auto
MSRP $1,295
Speedbird PRS-51
TimefactorsSpeedbird PRS-51
MSRP $436
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton Khaki Field Titanium Auto

The Hamilton Khaki Field Titanium Auto is widely praised for its lightweight titanium case with a matte black PVD coating offering a remarkable finish and a wearable 42mm size. Reviewers highlight its legible dial with military-style hands and subtle flares, along with a modern tribute design. It is powered by the H-10 movement, an ETA 2824 variation with an 80-hour power reserve, visible through a sapphire case back. Some owners express concern regarding water resistance, while one reviewer finds the date window's placement and color awkward. Overall, owners and reviewers rate the Hamilton Khaki Field Titanium Auto highly for its lightweight titanium construction and impressive 80-hour power reserve at its price point.

From video reviewers

The watch's bezel action is smooth and clicks into place with a satisfying feel. The lume on the watch is somewhat dim, which may be a drawback for those who prefer a brighter glow in low-light conditions.

Timefactors Speedbird PRS-51

Owners widely praise the Timefactors Speedbird PRS-51 for its flieger design, AR sapphire crystal, and value at £200. The 36mm case is noted to wear closer to 37mm due to the dial size, and while one owner describes the 5-link bracelet as well-built but stiff, another praises its drape and articulation. Accuracy figures vary among owners, with one reporting +7 seconds per day and another around +10 seconds per day, though one owner states theirs keeps impeccable time. The Miyota 9015 movement is noted by one owner to exhibit noticeable rotor wobble. Overall, owners rate the Timefactors Speedbird PRS-51 highly for its pilot watch aesthetics and value.

At a glance

11 of 29 specs differ
Diameter
Khaki Field Titanium Auto38mm
Speedbird PRS-5136mm
Power Reserve
Khaki Field Titanium Auto80h
Speedbird PRS-51
Water Resistance
Khaki Field Titanium Auto100m
Speedbird PRS-51100m
MSRP
Khaki Field Titanium Auto$1,295
Speedbird PRS-51$436

Full specifications

Case

6 specs
Category
Field
Diameter
38mm
36mm
Thickness
11.68mm
11.4mm
Lug-to-Lug
46mm
42mm
Lug Width
20mm
18mm
Material
Titanium
Stainless Steel

Crystal & Dial

2 specs
Dial Color
Blue
Black
Lume
None
SuperLuminova X1-C3

Movement

2 specs
Caliber
H-10
Miyota 9015
Power Reserve
80h

Pricing

1 specs
MSRP
$1,295
$436
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