Side by side

Maen Grand Tonneau Ultra ThinvsTudor Black Bay One 31 S&G

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

Grand Tonneau Ultra Thin
MaenGrand Tonneau Ultra Thin
MSRP $1,519
Black Bay One 31 S&G
TudorBlack Bay One 31 S&G
MSRP $6,850

At a glance

13 of 29 specs differ
Diameter
Grand Tonneau Ultra Thin34mm
Black Bay One 31 S&G31mm
Power Reserve
Grand Tonneau Ultra Thin40h
Black Bay One 31 S&G50h
Water Resistance
Grand Tonneau Ultra Thin50m
Black Bay One 31 S&G100m
MSRP
Grand Tonneau Ultra Thin$1,519
Black Bay One 31 S&G$6,850

Full specifications

Case

9 specs
Category
Dress
Diameter
34mm
31mm
Thickness
6.4mm
9.5mm
Lug-to-Lug
46mm
Lug Width
17mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Water Resistance
50m
100m
Caseback
Solid
Solid screw-down

Crystal & Dial

1 specs
Dial Color
MNL.04
Black

Movement

2 specs
Caliber
MT5201
Power Reserve
40h
50h

Pricing

1 specs
MSRP
$1,519
$6,850

Follow this matchup

Get a note when Maen Grand Tonneau Ultra Thin vs Tudor Black Bay One 31 S&G gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Maen Grand Tonneau Ultra Thin

Owners widely report the Maen Grand Tonneau Ultra Thin features a La Joux-Perret D101 manual-wind movement and a double-layer enamel dial. Some owners criticize the bracelet design and find the dial too small and lacking indices. One owner describes the Maen Grand Tonneau Ultra Thin as "hideous with a good movement." On balance, owners are divided on the Maen Grand Tonneau Ultra Thin, with some appreciating its movement and dial while others find its design unappealing.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.