Side by side

Hemel HD24 AutomaticvsTudor Black Bay One 31

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
TudorBlack Bay One 31
MSRP $4,600

At a glance

13 of 29 specs differ
Diameter
HD24 Automatic40mm
Black Bay One 3131mm
Power Reserve
HD24 Automatic40h
Black Bay One 3150h
Water Resistance
HD24 Automatic200m
Black Bay One 31100m
MSRP
HD24 Automatic$300
Black Bay One 31$4,600

Full specifications

Case

8 specs
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
Anthracite

Movement

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

Pricing

1 specs
MSRP
$300
$4,600

Follow this matchup

Get a note when Hemel HD24 Automatic vs Tudor Black Bay One 31 gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Vaer D5 Pacific Anacapa Auto
Vaermicro
Pacific

D5 Pacific Anacapa Auto

3 watches · 6 variantsPacific
39mm·Automatic·200m WR
$699MSRP
—Used
Henry Archer Akva
Henry Archermicro

Akva

13 variantsAkva
40mm·Automatic·200m WR
$4,299MSRP
—Used
Yema Diver
Yemamicro

Diver

2 watches · 9 variantsDiver
39.5mm·Automatic·200m WR
$990MSRP
—Used
Lorier Neptune SIV
Loriermicro

Neptune SIV

Ref. neptune-siv
39mm·Automatic·200m WR
$599MSRP
—Used
Geckota Sea-Hunter Dive Watch
Geckotamicro

Sea-Hunter Dive Watch

6 variantsSea-Hunter
40mm·Automatic·200m WR
$349MSRP
—Used
Yema Navygraf Pearl CMM.20
Yemamicro

Navygraf Pearl CMM.20

9 watches · 12 variantsNavygraf
39mm·Automatic·100m WR
$1,862MSRP
—Used
Dan Henry 1975
Dan Henrymicro

1975

14 variants1975
39mm·Automatic·150m WR
$310MSRP
—Used
Geckota Ocean-Scout Dive Watch
Geckotamicro

Ocean-Scout Dive Watch

5 variantsOcean-Scout
38.5mm·Automatic·200m WR
$375MSRP
—Used
All alternatives to the HD24 Automatic →All alternatives to the Black Bay One 31 →
Explore the full catalog
Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Tudor Black Bay One 31vsVaer D5 Pacific Anacapa AutoTudor Black Bay One 31vsYema DiverGeckota Sea-Hunter Dive WatchvsTudor Black Bay One 31Tudor Black Bay One 31vsYEMA x Alain Silberstein Limited EditionHemel HD24 AutomaticvsHenry Archer AkvaHemel HD24 AutomaticvsLorier Neptune SIV
Edit this comparisonAdd another watchMore diver comparisonsBest Diver Watches Under $500