Side by side

Grand Seiko SLGA015vsGrand Seiko SLGB023

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.

Grand Seiko SLGA015

The Grand Seiko SLGA015 is widely praised for its exceptional accuracy, with owners reporting performance far exceeding the stated 10 seconds per month. The Spring Drive movement's smooth sweep and 5-day power reserve are also noted strengths, as is the lighter titanium case construction. However, some owners find the bracelet extension non-intuitive, and one noted the clasp scratched easily. The watch features a nature-inspired, wave-like dial texture. Overall, owners rate the Grand Seiko SLGA015 highly for its impressive accuracy and quality construction.

Grand Seiko SLGB023

Owners and reviewers widely praise the Grand Seiko SLGB023 for its comfortable 40.8mm titanium case and the smooth winding feel of its Spring Drive 9RB1 movement. The dial's gradient blue "ushio" motif is a highlight, though some reviewers note the bezel's fully lumed scale as a missed opportunity. Enthusiasts are divided on the power reserve indicator's placement and the design of the hour and minute hands. Overall, owners and reviewers rate the Grand Seiko SLGB023 highly for its comfortable titanium case and the refined Spring Drive movement.

At a glance

8 of 29 specs differ
Diameter
SLGA01543.8mm
SLGB02340.8mm
Power Reserve
SLGA015120h
SLGB02372h
Water Resistance
SLGA015200m
SLGB023300m
MSRP
SLGA015$12,600
SLGB023$12,400

Full specifications

Case

5 specs
Diameter
43.8mm
40.8mm
Thickness
13.8mm
12.9mm
Lug-to-Lug
51.5mm
48.5mm
Lug Width
23mm
21mm
Water Resistance
200m
300m

Movement

2 specs
Caliber
9RA5
9RB1
Power Reserve
120h
72h

Pricing

1 specs
MSRP
$12,600
$12,400
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