Side by side

Tudor Black Bay 58 GMTvsGruppo Gamma Field III GMT Date

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

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 58 GMT

The Tudor Black Bay 58 GMT is widely praised for its functional, proportional, and ergonomic design, wearing identically to the standard Black Bay 58 and feeling substantial without being oversized. Owners are very happy with the 39mm case proportions, noting an improved 12.8mm height. The gilt dial aesthetics and gilt-effect accents are a point of praise for some, while others find them divisive. The Tudor Black Bay 58 GMT features the METAS-certified MT5450-U movement, which is anti-magnetic to 15,000 Gauss and offers a 65-hour power reserve. On balance, owners and reviewers rate the Tudor Black Bay 58 GMT highly for its improved case proportions and gilt dial aesthetics.

From video reviewers

The comfortable 39mm case size is a significant strength. The value at its price point is also a shared positive. Reviewers did not reach a consensus on any weaknesses.

Gruppo Gamma Field III GMT Date

Owners widely praise the Gruppo Gamma Field III GMT Date for its awesome looks, quality, and good value. The watch features a 40mm brushed 316L stainless steel case, box sapphire crystal, and 200m water resistance, powered by a Seiko NH34A movement. Some reviewers note the NH34A movement's accuracy can range from -20~+40 seconds per day, though one reviewer reported +5 seconds per day with a regulated movement. The dial's dense layout with Arabic numerals can be overwhelming for some, and one owner found the size unsuitable for smaller wrists. On balance, owners rate the Gruppo Gamma Field III GMT Date highly for its impressive finishing and toolish design at its price point.

At a glance

17 of 29 specs differ
Diameter
Black Bay 58 GMT39mm
Field III GMT Date40mm
Power Reserve
Black Bay 58 GMT65h
Field III GMT Date41h
Water Resistance
Black Bay 58 GMT200m
Field III GMT Date200m
MSRP
Black Bay 58 GMT$5,525
Field III GMT Date$459

Full specifications

Case

6 specs
Diameter
39mm
40mm
Thickness
12.8mm
14mm
Lug-to-Lug
48.5mm
Lug Width
12.8mm
22mm
Finish
Polished + Satin
Brushed and polished
Caseback
Solid screw-down
Solid

Crystal & Dial

3 specs
Crystal Shape
Flat
AR Coating
Yes
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
MT5450-U
Seiko Instruments NH38A
Beat Rate
0 vph
28,800 vph
Power Reserve
65h
41h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes
Complications
GMT
GMT, Date

Pricing

1 specs
MSRP
$5,525
$459
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