Side by side

Seestern Sub 300 V4vsGruppo Gamma Field III 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
Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

17 of 29 specs differ
Diameter
Sub 300 V442mm
Field III GMT40mm
Power Reserve
Sub 300 V441h
Field III GMT41h
Water Resistance
Sub 300 V4200m
Field III GMT200m
MSRP
Sub 300 V4$10
Field III GMT$459

Full specifications

Case

8 specs
Category
Diver
GMT
Diameter
42mm
40mm
Thickness
13mm
14mm
Lug-to-Lug
46mm
48.5mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed + Sandblasted
Brushed and polished
Caseback
Solid screw-down
Solid

Crystal & Dial

3 specs
AR Coating
Underside
Yes
Dial Color
Orange
Black
Lume
Japan Lume (blue glow)
Super-LumiNova

Movement

5 specs
Caliber
Seiko NH35A
Seiko Instruments NH38A
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
41h
Jewels
24
25
Complications
GMT, Date
GMT

Pricing

1 specs
MSRP
$10
$459

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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.

Gruppo Gamma Field III GMT

Owners praise the Gruppo Gamma Field III GMT for its look and value, with specific mentions of its sandwich dial and comfortable OEM straps. One owner notes incredible quality for the price across their Gruppo Gamma watches. The watch features a 40mm brushed stainless steel case, box sapphire crystal, and a Seiko NH34A movement with a 41-hour power reserve and stated accuracy of -20~+40 s/day. Some find the lack of a date window a drawback for a GMT, and question its differentiation from other NH34-powered watches. On balance, owners and reviewers find the Gruppo Gamma Field III GMT to be a good value with quality construction for its price point.

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