Side by side

Sheffield 1AvsTimefactors Speedbird GMT

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

1A
Sheffield1A
MSRP $223
What people say

Owners + reviewers, side by side

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

Sheffield 1A

Owners widely praise the Sheffield 1A for its superb quality, sturdiness, and value, with many finding its blue dial appealing and its construction more substantial than comparable models. One owner noted expensive shipping fees as a drawback, and another suggested the bezel action could be crisper. Overall, owners consider the Sheffield 1A a no-brainer for its affordability and quality.

Timefactors Speedbird GMT

Owners widely praise the Timefactors Speedbird GMT for its quality and value, with many appreciating its 36mm case size for wearability and its surprisingly good bracelet. Some owners note the GMT function is on an inner ring, and one owner found the date wheel sunken. The watch is noted for its classic aesthetic and is considered a good value, though purchasing requires patience due to limited order windows. Overall, owners rate the Timefactors Speedbird GMT highly for its wearability and value at the price point.

At a glance

11 of 29 specs differ
Diameter
1A40mm
Speedbird GMT36mm
Power Reserve
1A
Speedbird GMT
Water Resistance
1A200m
Speedbird GMT100m
MSRP
1A$223
Speedbird GMT$315

Full specifications

Case

6 specs
Category
Diver
Diameter
40mm
36mm
Thickness
12.8mm
11.6mm
Lug-to-Lug
46mm
42.5mm
Lug Width
20mm
18mm
Water Resistance
200m
100m

Crystal & Dial

2 specs
Dial Color
White/Blue
Black
Lume
Swiss blue lume
Super Luminova X1 C3

Movement

2 specs
Caliber
NH35
Ronda 515
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$223
$315
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