Side by side

Praesidus Neptune 44vsGrand Seiko SLGA001

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

Neptune 44
PraesidusNeptune 44
MSRP $550
SLGA001
Grand SeikoSLGA001
MSRP $11,100

At a glance

12 of 29 specs differ
Diameter
Neptune 4444mm
SLGA00146.9mm
Power Reserve
Neptune 4440h
SLGA001120h
Water Resistance
Neptune 44200m
SLGA001100m
MSRP
Neptune 44$550
SLGA001$11,100

Full specifications

Case

6 specs
Diameter
44mm
46.9mm
Thickness
16mm
Lug-to-Lug
50.8mm
Lug Width
22mm
23mm
Material
316L Stainless Steel
Titanium
Water Resistance
200m
100m

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
Patina
Black

Movement

3 specs
Caliber
Miyota 9039
9RA5
Type
Automatic
Spring Drive
Power Reserve
40h
120h

Pricing

1 specs
MSRP
$550
$11,100

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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.

Praesidus Neptune 44

The dial details and historical elements, including fragments from Iwo Jima battlefield relics, are praised. The bracelet exhibits rattle. Reviewers disagree on the use of faux patina on the dial.

Grand Seiko SLGA001

The Grand Seiko SLGA001 is praised for its impressive technical achievements, including a new, slimmer Spring Drive movement with a five-day power reserve and exceptional accuracy of ±0.5 seconds per day. Reviewers note the 47mm titanium case, despite its substantial dimensions, wears more comfortably due to its titanium construction, short lugs, and virtually scratch-proof finish. The watch features a 600-meter water resistance and is limited to 700 pieces, priced at $11,100. On balance, reviewers consider the Grand Seiko SLGA001 a highly capable dive watch, with its technological advancements in the Spring Drive movement being a key highlight.

From video reviewers

The watch's Spring Drive movement, specifically the Cal.9RA5, offers a 120-hour power reserve. A notable trade-off is the watch's relatively large size, with a case diameter of 46.9mm and thickness of 16.0mm, which may not suit those with smaller wrists. The high price point may be a trade-off for some buyers.

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