Side by side

RZE Fortitude GMTvsSeestern S456 GMT

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

Fortitude GMT
RZEFortitude GMT
MSRP $719
S456 GMT
SeesternS456 GMT
MSRP $299

At a glance

12 of 29 specs differ
Diameter
Fortitude GMT41mm
S456 GMT41mm
Power Reserve
Fortitude GMT40h
S456 GMT41hh
Water Resistance
Fortitude GMT200m
S456 GMT200m
MSRP
Fortitude GMT$719
S456 GMT$299

Full specifications

Case

4 specs
Thickness
12mm
13mm
Lug-to-Lug
47mm
49mm
Material
Grade 5 Titanium
316L Stainless Steel
Finish
Brushed and polished
Brushed + Polished

Crystal & Dial

3 specs
AR Coating
Underside
Inner
Dial Color
Red
Sunray style, applied and Diamond cut Indices, C1 lume
Lume
Super-LumiNova BGW9
C1

Movement

4 specs
Caliber
Miyota 9075
Seiko NH34
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
41hh
Jewels
25
24

Pricing

1 specs
MSRP
$719
$299

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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.

Seestern S456 GMT

Owners widely praise the Seestern S456 GMT for its exceptional value and finishing that exceeds expectations, with one owner noting its accuracy surpasses that of their Seiko 5. The dial displays a pearl-like rainbow effect. Some owners would prefer a bidirectional bezel over the current unidirectional one. The Seestern S456 GMT features an NH34 movement, a 39.5mm case, sapphire crystal, and an adjustable clasp. On balance, owners rate the Seestern S456 GMT highly for its impressive finishing and value proposition at its price point.

From video reviewers

The watch features stunning, detailed finishing that is difficult to top. Reviewers did not reach a consensus on any weaknesses.

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