Side by side

Tudor Black Bay One 31 S&GvsLongines LONGINES AVIGATION BIGEYE

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
LONGINES AVIGATION BIGEYE
LonginesLONGINES AVIGATION BIGEYE
MSRP $4,400

At a glance

12 of 29 specs differ
Diameter
Black Bay One 31 S&G31mm
LONGINES AVIGATION BIGEYE41mm
Power Reserve
Black Bay One 31 S&G50h
LONGINES AVIGATION BIGEYE40h
Water Resistance
Black Bay One 31 S&G100m
LONGINES AVIGATION BIGEYE30m
MSRP
Black Bay One 31 S&G$6,850
LONGINES AVIGATION BIGEYE$4,400

Full specifications

Case

8 specs
Category
Chronograph
Diameter
31mm
41mm
Thickness
9.5mm
14.5mm
Lug-to-Lug
46mm
48.7mm
Lug Width
17mm
20mm
Finish
Polished + Satin
Brushed and polished
Water Resistance
100m
30m
Caseback
Solid screw-down
Solid

Crystal & Dial

1 specs
Dial Color
Black
Blue

Movement

2 specs
Caliber
MT5201
L688.5
Power Reserve
50h
40h

Pricing

1 specs
MSRP
$6,850
$4,400

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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.

LONGINES AVIGATION BIGEYE

Owners and reviewers widely praise the Longines Avigation Bigeye for its unique, asymmetric dial, vintage military aesthetic, and cohesive design, with one reviewer noting its GPHG Best Revival prize win. The tactile chronograph pusher action and reliable L688.2 column wheel movement are highlighted, as is the watch's legibility and versatile strap-swapping potential due to its 20mm lug width. However, criticisms include the 30-minute sub-dial's three-minute hash marks, which some find compromise reading speed, and the lack of drilled lugs. The watch's thickness, around 14.45mm, is noted as typical for its movement, and some owners mention minor QC issues with chronograph hand alignment and a loud rotor. On balance, owners and reviewers rate the Longines Avigation Bigeye highly for its distinctive vintage-inspired design and solid chronograph performance at its price point.

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