Side by side

Glycine Combat Sub Box CeramicvsSeiko Prospex Sea

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Glycine Combat Sub Box Ceramic

Owners widely praise the Glycine Combat Sub Box Ceramic for its exceptional thinness at 10.4mm for a 42mm diver, perfect proportions for small wrists, and unique, non-homage aesthetic, with some considering it the best dive watch under $400 due to its superior finishing and value. The case shape, dimensions, and drilled lugs are also highlighted as positives, and the dial is legible with good lume on the hands. However, reviewers and owners consistently flag sub-par lume on the markers that fades quickly, and an inconsistent power reserve. Some owners report the stock strap or bracelet is subpar, and one owner experienced the bezel detaching after a light bump, questioning build quality. Accuracy figures vary, with one owner noting it runs about 2.5 seconds fast per day, while another reports an inconsistent power reserve. On balance, owners rate the Glycine Combat Sub Box Ceramic highly for its thinness, unique design, and value, despite concerns about lume and strap quality.

Seiko Prospex Sea

Owners and reviewers widely praise the Seiko Prospex Sea for its excellent value, robust build, and superior lume, with many noting its comfortable wearability and faithful design recreations. Some owners report the watch can feel big, thick, and heavy on smaller wrists, while others find the sizing perfect. The bezel action is frequently highlighted as smooth and precise, often exceeding that of less expensive models. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its impressive finishing and value proposition.

At a glance

18 of 29 specs differ
Diameter
Combat Sub Box Ceramic41mm
Prospex Sea41.7mm
Power Reserve
Combat Sub Box Ceramic38h
Prospex Sea41h
Water Resistance
Combat Sub Box Ceramic200m
Prospex Sea200m
MSRP
Combat Sub Box Ceramic$1,800
Prospex Sea$595

Full specifications

Case

6 specs
Diameter
41mm
41.7mm
Thickness
12.75mm
12.3mm
Lug-to-Lug
49.5mm
Material
Ceramic
Stainless Steel
Finish
Caseback

Crystal & Dial

6 specs
Crystal
Sapphire
Hardlex
Crystal Shape
AR Coating
Dial Color
Grey
Indices
Lume
Luminous
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
Sellita SW200-1
4R35
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
41h
Jewels
26
23
Complications
Date
None

Pricing

1 specs
MSRP
$1,800
$595
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