Side by side

Tudor Black Bay One 31 S&GvsYema Navygraf Heritage

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
Navygraf Heritage
YemaNavygraf Heritage
MSRP $990

At a glance

10 of 29 specs differ
Diameter
Black Bay One 31 S&G31mm
Navygraf Heritage39mm
Power Reserve
Black Bay One 31 S&G50h
Navygraf Heritage40h
Water Resistance
Black Bay One 31 S&G100m
Navygraf Heritage100m
MSRP
Black Bay One 31 S&G$6,850
Navygraf Heritage$990

Full specifications

Case

7 specs
Category
Diver
Diameter
31mm
39mm
Thickness
9.5mm
10.85mm
Lug Width
17mm
19mm
Material
Stainless Steel
316L Stainless Steel
Finish
Polished + Satin
Brushed and polished
Caseback
Solid screw-down
Solid

Movement

2 specs
Caliber
MT5201
Sellita SW200
Power Reserve
50h
40h

Pricing

1 specs
MSRP
$6,850
$990

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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.

Yema Navygraf Heritage

Owners widely praise the Yema Navygraf Heritage for its comfortable 39mm wearability and faithful 1970s reissue design, noting craftsmanship better than expected. Some owners report quality control issues including bezel free play and misalignment, while others find the bezel very tight to turn despite precise 120 clicks. The in-house MBP2000 movement is noted by some to be loud and run approximately +10 to +15 seconds per day. On balance, owners appreciate the Yema Navygraf Heritage for its retro aesthetic and comfortable sizing, with noted concerns around movement accuracy and bezel action.

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