Side by side

Spinnaker Bradner GMTvsTudor Black Bay One 31 S&G

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

Bradner GMT
SpinnakerBradner GMT
MSRP $299
Black Bay One 31 S&G
TudorBlack Bay One 31 S&G
MSRP $6,850

At a glance

13 of 29 specs differ
Diameter
Bradner GMT42mm
Black Bay One 31 S&G31mm
Power Reserve
Bradner GMT40h
Black Bay One 31 S&G50h
Water Resistance
Bradner GMT180m
Black Bay One 31 S&G100m
MSRP
Bradner GMT$299
Black Bay One 31 S&G$6,850

Full specifications

Case

9 specs
Category
GMT
Diameter
42mm
31mm
Thickness
15mm
9.5mm
Lug-to-Lug
50mm
46mm
Lug Width
22mm
17mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Water Resistance
180m
100m
Caseback
Solid
Solid screw-down

Crystal & Dial

1 specs
Dial Color
Brown
Black

Movement

2 specs
Caliber
Seiko NH34A
MT5201
Power Reserve
40h
50h

Pricing

1 specs
MSRP
$299
$6,850

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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.

Spinnaker Bradner GMT

The Spinnaker Bradner GMT is praised for its awesome lume and comfortable wearability, with one owner noting the rubber strap is very comfortable and the beads of rice bracelet fits well on smaller wrists. Some find its 15mm thickness and bold colorway may not appeal to everyone, and one owner views it as more of a casual GMT with tool-watch styling than a diver. Overall, owners rate the Spinnaker Bradner GMT highly for its value and comfortable wearability.

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.

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