Side by side

RZE Fortitude GMTvsSeiko Prospex Sea The Black Series

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

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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.

From video reviewers

The titanium construction and sandwich dial are consistent strengths. The lume brightness was not consistently addressed.

Seiko Prospex Sea The Black Series

The Seiko Prospex Sea The Black Series is widely praised for its impressive value and compelling design elements. Reviewers highlight the SLA073's cave-diving-inspired dial, high-quality bracelet, and the robust 8L35 movement, calling it a standout release. The SRPE33 and SRPE39 models are noted for their attractive price, manta ray decorated dials, and excellent LumiBrite lume, though bezel alignment can be inconsistent. The SNJ029 is celebrated for its dynamic, colorful aesthetic, solar charging, and comfortable strap, making it ideal for outdoor adventures. Overall, the consensus is that Seiko Prospex Sea The Black Series models offer excellent value, with specific models lauded for their unique dials, quality finishing, and practical features like solar charging.

At a glance

14 of 29 specs differ
Diameter
Fortitude GMT41mm
Prospex Sea The Black Series45mm
Power Reserve
Fortitude GMT
Prospex Sea The Black Series41h
Water Resistance
Fortitude GMT200m
Prospex Sea The Black Series200m
MSRP
Fortitude GMT$719
Prospex Sea The Black Series$765

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
41mm
45mm
Thickness
12mm
13.2mm
Lug-to-Lug
47mm
47.7mm
Lug Width
20mm
22mm
Material
Grade 5 Titanium
Stainless Steel

Crystal & Dial

3 specs
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
Red
Lume
Super-LumiNova BGW9
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Miyota 9075
Seiko 4R36
Power Reserve
0h
41h
Jewels
0
24
Complications
GMT
None

Pricing

1 specs
MSRP
$719
$765
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