Side by side

Glycine Combat SubvsTudor Black Bay One 31

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

Combat Sub
GlycineCombat Sub
MSRP $1,850
Black Bay One 31
TudorBlack Bay One 31
MSRP $4,600

At a glance

17 of 29 specs differ
Diameter
Combat Sub36mm
Black Bay One 3131mm
Power Reserve
Combat Sub38h
Black Bay One 3150h
Water Resistance
Combat Sub300m
Black Bay One 31100m
MSRP
Combat Sub$1,850
Black Bay One 31$4,600

Full specifications

Case

7 specs
Diameter
36mm
31mm
Thickness
12mm
9.5mm
Lug-to-Lug
46mm
Lug Width
18mm
17mm
Finish
Polished + Satin
Water Resistance
300m
100m
Caseback
Solid screw-down

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Black
Anthracite
Indices
Applied
Lume
Luminous
None

Movement

4 specs
Caliber
SW200-1
MT5201
Power Reserve
38h
50h
Jewels
26
25
Complications
Date
None

Pricing

1 specs
MSRP
$1,850
$4,600

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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.

Glycine Combat Sub

The Glycine Combat Sub is widely praised for its excellent value, thin case height (ranging from 10.4mm to 10.8mm), and comfortable wearability due to downward-curving lugs, with owners noting its quality and finishing punch well above its price point. Reviewers and owners consistently highlight its smooth bezel action, crisp font, and a unique aesthetic that avoids being a direct homage. However, criticisms include sub-par lume that is difficult to read in low light and an inconsistent power reserve, with some owners suggesting it may require servicing. Opinions are split on the 42mm size, with some finding it perfect and others preferring a smaller variant. On balance, owners and reviewers rate the Glycine Combat Sub highly for its exceptional thinness and quality finishing at its price point.

Tudor Black Bay One 31

Owners widely report the Tudor Black Bay One 31's polished case and bracelet scratch easily, though its wearability under gloves and robust movement are praised. Some desire more micro-adjustment options on the clasp, and a lack of contrast between the silver dial and hands is noted. The 31mm size may be a consideration for daily wear due to its 50-hour power reserve. On balance, owners and reviewers appreciate the Tudor Black Bay One 31 for its comfortable wearability and robust movement, despite concerns about case scratching and clasp adjustability.

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