Side by side
Sheffield 1AvsTudor Black Bay 54
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
1A40mm
Black Bay 5437mm
Power Reserve
1A—
Black Bay 5470h
Water Resistance
1A200m
Black Bay 54200m
MSRP
1A$223
Black Bay 54$4,725
Full specifications
Case
4 specsDiameter
40mm
37mm
Thickness
12.8mm
11.2mm
Finish
Brushed and polished
Polished + Satin
Caseback
Solid
Solid screw-down
Crystal & Dial
4 specsCrystal Shape
Flat
—
AR Coating
Inner
—
Dial Color
White/Blue
Blue
Lume
Swiss blue lume
Super-LumiNova
Movement
6 specsCaliber
Seiko NH35A
MT5400
Beat Rate
28,800 vph
0 vph
Power Reserve
—
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Pricing
1 specsMSRP
$223
$4,725
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