Side by side

Grand Seiko SBGY002vsStudio Underd0g Full Moon

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

SBGY002
Grand SeikoSBGY002
MSRP $30,000
Full Moon
Studio Underd0gFull Moon
MSRP $800

At a glance

13 of 29 specs differ
Diameter
SBGY00238.5mm
Full Moon39.5mm
Power Reserve
SBGY00272h
Full Moon40h
Water Resistance
SBGY00230m
Full Moon
MSRP
SBGY002$30,000
Full Moon$800

Full specifications

Case

7 specs
Category
Dress
Casual
Diameter
38.5mm
39.5mm
Thickness
10.2mm
Lug-to-Lug
43.7mm
Lug Width
19mm
Material
Gold
Stainless Steel
Water Resistance
30m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
Standard

Movement

3 specs
Caliber
9R31
Type
Spring Drive
Manual
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$30,000
$800

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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 SBGY002

Owners and reviewers widely praise the Grand Seiko SBGY002 for its impeccable design, finishing, and attention to detail, highlighting its slender 38.5mm case and thin profile for comfortable wear. The Spring Drive movement, calibre 9R31, is noted for its accuracy within one second per day and a 72-hour power reserve, with one owner appreciating the movement's finishing and the watch's overall class and simplicity, preferring the power reserve indicator on the case back. The Snowflake dial's appearance changes with light, often appearing less yellow than expected, and a matte blue strap can make the SBGY002 more casual for daily wear, complementing the seconds hand. The Grand Seiko SBGY002 is considered a home run for its combination of iconic dial and dress case, though its yellow gold construction and price point position it differently than steel alternatives.

Studio Underd0g Full Moon

Owners widely praise the Studio Underd0g Full Moon's harmonious creamy dial and its 37mm case, which fits flawlessly. The innovative sapphire disc with numerals is a highlight, though two visible screws holding it are noted as a minor aesthetic drawback. Some owners find the watch overpriced, while others see value in the upgraded Sellita movement under $1k. Lume is surprisingly good, and the included NATO strap is preferred by some over the leather. Accuracy ranges from +1/+2 seconds per day to about -6 seconds per day. On balance, owners rate the Studio Underd0g Full Moon highly for its versatile dial and well-fitting case at the price point.

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