Side by side
Grand Seiko SBGW306vsTudor Black Bay One 31 S&G
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
SBGW30636.5mm
Black Bay One 31 S&G31mm
Power Reserve
SBGW30672h
Black Bay One 31 S&G50h
Water Resistance
SBGW306100m
Black Bay One 31 S&G100m
MSRP
SBGW306$17,900
Black Bay One 31 S&G$6,850
Full specifications
Case
8 specsCategory
Dress
—
Diameter
36.5mm
31mm
Thickness
11.7mm
9.5mm
Lug-to-Lug
42.7mm
46mm
Lug Width
18mm
17mm
Material
Gold
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Caseback
Solid
Solid screw-down
Crystal & Dial
1 specsAR Coating
Yes
Inner
Movement
3 specsCaliber
9S64
MT5201
Type
Manual
Automatic
Power Reserve
72h
50h
Pricing
1 specsMSRP
$17,900
$6,850
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