Side by side

Seestern Sub 300 V4vsRZE Fortitude GMT

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

Sub 300 V4
SeesternSub 300 V4
MSRP $10
Fortitude GMT
RZEFortitude GMT
MSRP $719

At a glance

15 of 29 specs differ
Diameter
Sub 300 V442mm
Fortitude GMT41mm
Power Reserve
Sub 300 V441h
Fortitude GMT40h
Water Resistance
Sub 300 V4200m
Fortitude GMT200m
MSRP
Sub 300 V4$10
Fortitude GMT$719

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
42mm
41mm
Thickness
13mm
12mm
Lug-to-Lug
46mm
47mm
Material
316L Stainless Steel
Grade 5 Titanium
Finish
Brushed + Sandblasted
Brushed and polished
Caseback
Solid screw-down
Solid

Crystal & Dial

2 specs
Dial Color
Orange
Red
Lume
Japan Lume (blue glow)
Super-LumiNova BGW9

Movement

5 specs
Caliber
Seiko NH35A
Miyota 9075
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
GMT

Pricing

1 specs
MSRP
$10
$719

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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.

Seestern Sub 300 V4

Owners widely praise the Seestern Sub 300 V4 for its terrific fit and finish and surprising little touches at its $179 price, noting top-notch case, dial, bezel, and crystal. The bracelet is considered nice enough for the price point, and the watch is powered by the solid and reliable Seiko NH35 movement. Some owners report that the polished sides of the case show signs of wear. Overall, owners rate the Seestern Sub 300 V4 highly for its excellent case, dial, and bezel finishing at the price.

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.

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