Side by side

Grand Seiko SLGA015vsSeiko Prospex LX line

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 LX line

Owners widely report the dial's blue-green sunburst is phenomenal, and the sapphire glass features blue AR coating. Some owners feel the high price limits discounts and sales, with one AD noting extremely low sales due to the cost. One owner reported DLC peeling off a two-week-old watch, and another noted quality control issues like bezel inserts and fallen second hands. On balance, owners consider the Seiko Prospex LX line a nicely built watch, though pricing led to poor sales and its discontinuation.

At a glance

11 of 29 specs differ
Diameter
SLGA01543.8mm
Prospex LX line44.8mm
Power Reserve
SLGA015120h
Prospex LX line72h
Water Resistance
SLGA015200m
Prospex LX line200m
MSRP
SLGA015$12,600
Prospex LX line$5,500

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
43.8mm
44.8mm
Thickness
13.8mm
14.7mm
Lug-to-Lug
51.5mm
50.9mm
Lug Width
23mm
22mm

Crystal & Dial

2 specs
AR Coating
Yes
Super-clear coating
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
9RA5
5R66
Power Reserve
120h
72h
Jewels
0
30

Pricing

1 specs
MSRP
$12,600
$5,500
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when Grand Seiko SLGA015 vs Seiko Prospex LX line gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.