Seiko 5KXvsSwatch Green Abyss

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Seiko 5KX at true scale

5KX

Swatch Green Abyss at true scale

Green Abyss

Diameter

42.5mm

42.3mm

Lug-to-Lug

46mm

lowest

48mm

Thickness

13.4mm

lowest

14.4mm

Water Resistance

100m

highest

91m

Power Reserve

41h

90h

highest

MSRP

$350

lowest

$445

Movement

Seiko 4R36

Swatch SISTEM51

Case

7 specs
Diameter
42.5mm
42.3mm
Thickness
13.4mm
14.4mm
Lug-to-Lug
46mm
48mm
Lug Width
22mm
n/a
Material
Stainless Steel
Bioceramic
Finish
n/a
Bioceramic
Water Resistance
100m
91m

Crystal & Dial

3 specs
Crystal
Hardlex
n/a
Dial Color
Blue
Green
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
Seiko 4R36
Swatch SISTEM51
Power Reserve
41h
90h
Jewels
24
0

Pricing

1 specs
MSRP
$350
$445
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Reviews

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

Seiko 5KX

Owners widely praise the Seiko 5KX for its strong lume and value, with many reporting accuracy within +/-5 to 10 seconds per day, though some experience +/-1 second. The 42.5mm case is noted to wear smaller, and the watch offers a comfortable feel for many. Some owners are split on the bracelet quality, with opinions ranging from "cheaper side" with hollow links to "flimsy-feeling" jubilee. A few quality control issues have been reported, including a failed bezel clickspring and misaligned components. The Seiko 5KX is seen by some as a worthy successor to the original SKX, offering an upgraded movement with hacking and hand-winding capabilities, though others lament the loss of ISO certification and a screw-down crown. Overall, owners rate the Seiko 5KX highly for its excellent lume and value proposition, making it a popular choice for everyday wear.

Swatch Green Abyss

Owners widely praise the Swatch Green Abyss for its gorgeous, premium-looking forest green dial and tactical color combination, with several calling it their favorite Swatch collaboration to date. Reviewers highlight the sand-beige Super-LumiNova for excellent legibility. Some owners note the green appears less dark in person than in photos and can look plastic-like. The Swatch Green Abyss features the Swatch SISTEM51 automatic movement and is priced at $400. Overall, owners and reviewers rate the Swatch Green Abyss highly for its striking colorway and legibility at the price.