Side by side

Grand Seiko SLGB005vsZelos Helica

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

SLGB005
Grand SeikoSLGB005
MSRP $11,100
Helica
ZelosHelica
MSRP $499

At a glance

11 of 29 specs differ
Diameter
SLGB00537mm
Helica39mm
Power Reserve
SLGB00572h
Helica40h
Water Resistance
SLGB005100m
Helica100m
MSRP
SLGB005$11,100
Helica$499

Full specifications

Case

5 specs
Category
Dress
Diver
Diameter
37mm
39mm
Thickness
11.4mm
10.5mm
Lug-to-Lug
44.3mm
39mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
39 - Wave MOP

Movement

3 specs
Caliber
9RB2
Miyota 9015
Type
Spring Drive
Automatic
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$11,100
$499

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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.

Grand Seiko SLGB005

The Grand Seiko SLGB005 is widely praised for its stunning "Ice Forest" smoked purple dial, inspired by frost-covered trees, and its compact 37mm Ever-Brilliant Steel case. It is powered by the 9RB2 Spring Drive caliber, noted for its exceptional accuracy of ±3 seconds per month or ±20 seconds per year, and offers a 72-hour power reserve. Reviewers consistently highlight the dial's mesmerizing beauty and the case's sculpted design as significant strengths. However, multiple sources express disappointment that the Grand Seiko SLGB005 omits the micro-adjustment clasp found on other models, especially considering its $11,100 price point, though one reviewer found this did not detract from wearability. Overall, reviewers rate the Grand Seiko SLGB005 highly for its visually arresting dial and precise Spring Drive movement, despite the clasp oversight.

From video reviewers

The watch features a ±3 seconds per month accurate Ultra Fine Accuracy Calibre 9RB2 movement. The Ever-Brilliant Steel finish has polishing flaws that detract from the watch's appearance. Reviewers disagree on the movement's accuracy, with one reviewer citing ±3 seconds per month and another ±10 seconds per month.

Zelos Helica

Owners widely praise the Zelos Helica for its stunning, often color-shifting dials, with specific mentions of the MoP, slate grey, 'Steel Blue', and red opal variants being particularly captivating and artful. The 39mm case size is noted as fitting well on smaller wrists, and the overall build quality and finishing for the price are frequently highlighted as impressive, with one owner calling it "a lot of watch for the price." Some owners appreciate the novel bracelet designs and full lume dials, while others find the bracelet and clasp edges sharp or the clasp lacking on-the-fly adjustment. Opinions on the date window are mixed, with one owner disliking it. The Zelos Helica Moonphase was considered cluttered by one owner, and its $1K USD price point was felt to be steep by another, though popular variants sold out rapidly. Overall, owners rate the Zelos Helica highly for its striking dial designs and impressive value proposition.

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