Side by side

Tudor Black Bay One 31vsYema Navygraf Chrono

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
Navygraf Chrono
YemaNavygraf Chrono
MSRP $1,999

At a glance

13 of 29 specs differ
Diameter
Black Bay One 3131mm
Navygraf Chrono40mm
Power Reserve
Black Bay One 3150h
Navygraf Chrono40h
Water Resistance
Black Bay One 31100m
Navygraf Chrono100m
MSRP
Black Bay One 31$4,600
Navygraf Chrono$1,999

Full specifications

Case

8 specs
Category
Diver
Chronograph
Diameter
31mm
40mm
Thickness
9.5mm
13.9mm
Lug-to-Lug
46mm
Lug Width
17mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Polished + Satin
Brushed and polished
Caseback
Solid screw-down
Solid

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Anthracite
Navy

Movement

2 specs
Caliber
MT5201
Power Reserve
50h
40h

Pricing

1 specs
MSRP
$4,600
$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

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 Navygraf Chrono

Owners praise the Yema Navygraf Chrono for its handsome, versatile design and the value offered by its Valjoux 7750 movement. A reviewer notes the 40mm case's fully polished finish, which some feel clashes with its sporty aesthetic, and mentions its 13.9mm thickness is noticeable. One owner reported wearing the Yema Navygraf Chrono for two months without issues, receiving compliments. On balance, owners and reviewers find the Yema Navygraf Chrono to be a good-looking and well-specced watch for its price.

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