Side by side

Seestern Sub 300 V4vsMarathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

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

Sub 300 V4
SeesternSub 300 V4
MSRP $10
JDD (Jumbo Day/Date) Anthracite Diver's Automatic
MarathonJDD (Jumbo Day/Date) Anthracite Diver's Automatic
MSRP $3,250

At a glance

17 of 29 specs differ
Diameter
Sub 300 V442mm
JDD (Jumbo Day/Date) Anthracite Diver's Automatic46mm
Power Reserve
Sub 300 V441h
JDD (Jumbo Day/Date) Anthracite Diver's Automatic40h
Water Resistance
Sub 300 V4200m
JDD (Jumbo Day/Date) Anthracite Diver's Automatic300m
MSRP
Sub 300 V4$10
JDD (Jumbo Day/Date) Anthracite Diver's Automatic$3,250

Full specifications

Case

8 specs
Diameter
42mm
46mm
Thickness
13mm
18mm
Lug-to-Lug
46mm
55mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
316L Stainless Steel (Anthracite IP)
Finish
Brushed + Sandblasted
Brushed and polished
Water Resistance
200m
300m
Caseback
Solid screw-down
Solid

Crystal & Dial

3 specs
AR Coating
Underside
Inner
Dial Color
Orange
Anthracite
Lume
Japan Lume (blue glow)
None

Movement

5 specs
Caliber
Seiko NH35A
Sellita SW220-1
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$10
$3,250

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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.

Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

Owners widely praise the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic as a tough, underrated tool watch with lifestyle appeal, highlighting its robust build and tritium lume for excellent legibility. However, its 46mm size is a common criticism, with some finding it heavy and top-heavy, and the OEM rubber strap stiff. One owner noted the watch runs about 10 seconds fast after three days, and the ETA 2836-2 movement offers approximately two days of power reserve. On balance, owners and reviewers rate the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic highly for its robust tool-watch build and legibility, despite its substantial size.

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