Side by side

Tudor Black Bay One 31 S&GvsZelos Skyraider 40 Skeleton

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

Black Bay One 31 S&G
TudorBlack Bay One 31 S&G
MSRP $6,850
Skyraider 40 Skeleton
ZelosSkyraider 40 Skeleton
MSRP $1,999

At a glance

14 of 29 specs differ
Diameter
Black Bay One 31 S&G31mm
Skyraider 40 Skeleton40mm
Power Reserve
Black Bay One 31 S&G50h
Skyraider 40 Skeleton40h
Water Resistance
Black Bay One 31 S&G100m
Skyraider 40 Skeleton50m
MSRP
Black Bay One 31 S&G$6,850
Skyraider 40 Skeleton$1,999

Full specifications

Case

9 specs
Category
Skeleton
Diameter
31mm
40mm
Thickness
9.5mm
8.2mm
Lug-to-Lug
46mm
40mm
Lug Width
17mm
20mm
Material
Stainless Steel
Titanium
Finish
Polished + Satin
Brushed and polished
Water Resistance
100m
50m
Caseback
Solid screw-down
Solid

Crystal & Dial

1 specs
Dial Color
Black
Ti Damascus LE

Movement

3 specs
Caliber
MT5201
Swiss Skeletonised Marvin 700
Type
Automatic
Manual
Power Reserve
50h
40h

Pricing

1 specs
MSRP
$6,850
$1,999

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What people say

Owners + reviewers, side by side

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

Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G is praised for its quiet luxury, combining brushed steel and warm gold accents for understated charm. Owners appreciate the brushed gold for a casual two-tone look and the champagne dial's surprising legibility. Some find the case sides too thick, and one user expressed a desire for a smaller S&G variant. The watch features the MT5612 movement with a 70-hour power reserve and a date function, within a 200-meter water-resistant case. Overall, owners and reviewers highlight the Tudor Black Bay One 31 S&G's balanced two-tone aesthetic as its primary appeal.

Zelos Skyraider 40 Skeleton

The Zelos Skyraider 40 Skeleton is noted for its skeletonized dial and the use of BGW9 and C3 Super-LumiNova for legibility. It is powered by a manual-wind ETA 6498 movement, offering a 44-hour power reserve. On balance, the Zelos Skyraider 40 Skeleton is seen as a cool-looking option, though availability is a factor.

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