Side by side

Grand Seiko SLGA015vsSeiko Prospex Sea Save the Ocean Special Edition

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.

Seiko Prospex Sea Save the Ocean Special Edition

Owners widely praise the Seiko Prospex Sea Save the Ocean Special Edition for its exceptional and captivating dial designs, often described as a highlight that evokes ocean surfaces with unique textures and color gradients. The watch is frequently noted for its excellent value, with some reviewers comparing its aesthetics to much higher-priced brands. Owners report satisfactory lume and accurate timekeeping, with figures ranging from +5 seconds per day to more precise results. However, some owners and reviewers point to the bracelet clasp as a point of criticism, describing it as underwhelming or flimsy, and some find the watch to be top-heavy. There are also mentions of imperfect day/date wheel alignment and occasional bezel alignment issues on some models within the line. The Seiko Prospex Sea Save the Ocean Special Edition is available in various case sizes, with some owners questioning if certain dimensions are too bulky for daily wear.

At a glance

11 of 29 specs differ
Diameter
SLGA01543.8mm
Prospex Sea Save the Ocean Special Edition43.8mm
Power Reserve
SLGA015120h
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
SLGA015200m
Prospex Sea Save the Ocean Special Edition200m
MSRP
SLGA015$12,600
Prospex Sea Save the Ocean Special Edition$650

Full specifications

Case

4 specs
Thickness
13.8mm
12.8mm
Lug-to-Lug
51.5mm
48.7mm
Lug Width
23mm
22mm
Material
Titanium
Stainless Steel

Crystal & Dial

2 specs
AR Coating
Yes
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
9RA5
Seiko 4R35
Type
Spring Drive
Automatic
Power Reserve
120h
41h
Jewels
0
23

Pricing

1 specs
MSRP
$12,600
$650
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