Side by side

Hemel HD24 AutomaticvsTudor Black Bay One 31 S&G

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

HD24 Automatic
HemelHD24 Automatic
MSRP $300
Black Bay One 31 S&G
TudorBlack Bay One 31 S&G
MSRP $6,850

At a glance

14 of 29 specs differ
Diameter
HD24 Automatic40mm
Black Bay One 31 S&G31mm
Power Reserve
HD24 Automatic40h
Black Bay One 31 S&G50h
Water Resistance
HD24 Automatic200m
Black Bay One 31 S&G100m
MSRP
HD24 Automatic$300
Black Bay One 31 S&G$6,850

Full specifications

Case

9 specs
Category
Diver
—
Diameter
40mm
31mm
Thickness
13mm
9.5mm
Lug-to-Lug
48mm
46mm
Lug Width
20mm
17mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Water Resistance
200m
100m
Caseback
Solid
Solid screw-down

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
Gallant USAF Edition
Black

Movement

2 specs
Caliber
Seiko NH38A
MT5201
Power Reserve
40h
50h

Pricing

1 specs
MSRP
$300
$6,850

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