Side by side

RZE Fortitude GMTvsSeiko 5 Sports Field series

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

Fortitude GMT
RZEFortitude GMT
MSRP $719
5 Sports Field series
Seiko5 Sports Field series
MSRP $450

At a glance

15 of 29 specs differ
Diameter
Fortitude GMT41mm
5 Sports Field series39.4mm
Power Reserve
Fortitude GMT40h
5 Sports Field series41h
Water Resistance
Fortitude GMT200m
5 Sports Field series100m
MSRP
Fortitude GMT$719
5 Sports Field series$450

Full specifications

Case

5 specs
Diameter
41mm
39.4mm
Thickness
12mm
13.6mm
Lug-to-Lug
47mm
47.9mm
Material
Grade 5 Titanium
Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

5 specs
Crystal
Sapphire
Hardlex
Crystal Shape
Flat
Curved
AR Coating
Underside
Inner
Dial Color
Red
Black
Lume
Super-LumiNova BGW9
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Miyota 9075
4R34
Power Reserve
40h
41h
Jewels
25
24
Complications
GMT
None

Pricing

1 specs
MSRP
$719
$450

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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.

RZE Fortitude GMT

The RZE Fortitude GMT is widely praised for its lightweight titanium construction and durable UltraHex coating, offering exceptional value under $700. Owners and reviewers highlight its comfortable wearability, with a bracelet featuring a quick-adjust clasp and multiple micro-adjustment positions. The Miyota 9075 flyer GMT movement is noted for its accuracy, with one owner reporting -1 to +1 seconds per day, though another source states a range of -10/+30 seconds per day. The watch's design is appreciated for its soul and attention to detail, including a subtle red crown tube indicator and faceted lugs, and its Nimbus Grey dial features a coarse, sandpaper-like texture and fumé effect. A reviewer points out the rotor can be loud and a smaller screwdriver is needed for sizing, while an owner found the GMT hand lume confusing. Overall, owners and reviewers rate the RZE Fortitude GMT highly for its comfortable titanium build, durable coating, and excellent value.

Seiko 5 Sports Field series

The Seiko 5 Sports Field series offers an accessible explorer-style watch with a 41mm stainless steel case, 100m water resistance, and a Hardlex crystal. The Field GMT model features a caller GMT complication powered by the 4R34 movement, while the standard Field models use the 4R36 with a 41-hour power reserve. Both models include Arabic numerals coated in LumiBrite and a lumed pearl on the bezel. On balance, the Seiko 5 Sports Field GMT is a well-regarded entry-level explorer watch for its price point, despite its office-style GMT function.

From video reviewers

The prominent five-sided GMT hand enhances legibility and adds a sophisticated aesthetic to the watch. The Seiko 5 Sports Field series offers similar functionality to the Explorer 2 at a lower price, making it a valuable option. Reviewers disagree on whether it's a missed opportunity for Seiko to release this model first, with one reviewer implying it would have been a more logical addition to their lineup.

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