Side by side

Glycine Combat Sub Box CeramicvsSeiko 5KX

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 5KX

Owners widely praise the Seiko 5 Sports SKX series for its strong lume and comfortable wearability, with many noting its compact feel due to a short lug-to-lug length. The NH36 movement's accuracy varies, with typical performance between +/-5 to 10 seconds per day, though some report better. A lack of screw-down crown and ISO certification are noted drawbacks for its water resistance. Some owners find the bracelet to be of cheaper construction with hollow links, and a few have reported quality control issues. The consensus is that the Seiko 5 Sports SKX series offers good value for its price, appealing to those who appreciate its tool-like nature and iconic lineage.

At a glance

20 of 29 specs differ
Diameter
Combat Sub Box Ceramic41mm
5KX42.5mm
Power Reserve
Combat Sub Box Ceramic38h
5KX41h
Water Resistance
Combat Sub Box Ceramic200m
5KX100m
MSRP
Combat Sub Box Ceramic$1,800
5KX$350

Full specifications

Case

8 specs
Diameter
41mm
42.5mm
Thickness
12.75mm
13.4mm
Lug-to-Lug
46mm
Lug Width
20mm
22mm
Material
Ceramic
Stainless Steel
Finish
Water Resistance
200m
100m
Caseback

Crystal & Dial

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

Movement

5 specs
Caliber
Sellita SW200-1
4R36
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
41h
Jewels
26
24
Complications
Date
None

Pricing

1 specs
MSRP
$1,800
$350
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