Side by side

RZE Fortitude GMTvsSeiko Prospex Sea

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

Fortitude GMT
RZEFortitude GMT
MSRP $719
Prospex Sea
SeikoProspex Sea
MSRP $900

At a glance

13 of 29 specs differ
Diameter
Fortitude GMT41mm
Prospex Sea41mm
Power Reserve
Fortitude GMT40h
Prospex Sea70h
Water Resistance
Fortitude GMT200m
Prospex Sea200m
MSRP
Fortitude GMT$719
Prospex Sea$900

Full specifications

Case

4 specs
Category
GMT
Diver
Thickness
12mm
12.3mm
Lug-to-Lug
47mm
46.9mm
Material
Grade 5 Titanium
Stainless Steel

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
Red
Black
Lume
Super-LumiNova BGW9
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Miyota 9075
6R35
Power Reserve
40h
70h
Jewels
25
24
Complications
GMT
None

Pricing

1 specs
MSRP
$719
$900

Follow this matchup

Get a note when RZE Fortitude GMT vs Seiko Prospex Sea gets more votes, a community discussion, or a price drop. No account needed.

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 Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.