Side by side

Tudor Black Bay One 31vsYema Granvelle CMM.29

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

Black Bay One 31
TudorBlack Bay One 31
MSRP $4,600
Granvelle CMM.29
YemaGranvelle CMM.29
MSRP $1,913

At a glance

13 of 29 specs differ
Diameter
Black Bay One 3131mm
Granvelle CMM.2939mm
Power Reserve
Black Bay One 3150h
Granvelle CMM.2940h
Water Resistance
Black Bay One 31100m
Granvelle CMM.2950m
MSRP
Black Bay One 31$4,600
Granvelle CMM.29$1,913

Full specifications

Case

9 specs
Category
Diver
Dress
Diameter
31mm
39mm
Thickness
9.5mm
8.6mm
Lug-to-Lug
46mm
Lug Width
17mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Polished + Satin
Brushed and polished
Water Resistance
100m
50m
Caseback
Solid screw-down
Solid

Crystal & Dial

1 specs
Dial Color
Anthracite
Black

Movement

2 specs
Caliber
MT5201
Yema CMM.29
Power Reserve
50h
40h

Pricing

1 specs
MSRP
$4,600
$1,913

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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

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.

Yema Granvelle CMM.29

Owners praise the Yema Granvelle CMM.29's gorgeous dial, noting its guilloché pattern and carved hour indices that catch the light. One owner describes the movement as a "feast for the eyes" but finds the watch frustrating at work due to its lack of a specific function. On balance, owners appreciate the Yema Granvelle CMM.29 for its visually striking dial and movement finishing, with some finding its utility limited in certain professional contexts.

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