Side by side

Hamilton Jazzmaster Viewmatic AutovsTimefactors Speedbird PRS-51

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

What people say

Owners + reviewers, side by side

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

Hamilton Jazzmaster Viewmatic Auto

Owners widely praise the Hamilton Jazzmaster Viewmatic Auto for its classic yet modern aesthetic, comfortable 37mm size suitable for smaller wrists, and superb case finishing for the price. The textured silver dial and subtle blue hands are noted as appealing details, and the watch is seen as versatile for both casual and formal wear. Accuracy is reported as impressive, with some owners observing deviations of only 1-2 seconds per day. One owner noted a discrepancy in the stated case thickness, with Hamilton listing 10.10mm. On balance, owners rate the Hamilton Jazzmaster Viewmatic Auto highly for its excellent value and versatile, classic design.

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

10 of 29 specs differ
Diameter
Jazzmaster Viewmatic Auto40mm
Speedbird PRS-5136mm
Power Reserve
Jazzmaster Viewmatic Auto80h
Speedbird PRS-51
Water Resistance
Jazzmaster Viewmatic Auto50m
Speedbird PRS-51100m
MSRP
Jazzmaster Viewmatic Auto$995
Speedbird PRS-51$436

Full specifications

Case

6 specs
Category
Dress
Diameter
40mm
36mm
Thickness
10.8mm
11.4mm
Lug-to-Lug
46mm
42mm
Lug Width
20mm
18mm
Water Resistance
50m
100m

Crystal & Dial

1 specs
Lume
None
SuperLuminova X1-C3

Movement

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

Pricing

1 specs
MSRP
$995
$436
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