Which is cheaper, the Praesidus Neptune 44 or the Grand Seiko SLGH017?

At MSRP the Praesidus Neptune 44 is the cheaper of the two at $550, against $10,500 for the Grand Seiko SLGH017 — a $9,950 gap before any retailer discounting.

Which is bigger, the Praesidus Neptune 44 or the Grand Seiko SLGH017?

The Praesidus Neptune 44 wears larger at 44mm versus 40mm for the Grand Seiko SLGH017 — a 4mm difference across the dial.

Which has better water resistance, the Praesidus Neptune 44 or the Grand Seiko SLGH017?

The Praesidus Neptune 44 is rated to 200m versus 100m for the Grand Seiko SLGH017.

Which has a longer power reserve, the Praesidus Neptune 44 or the Grand Seiko SLGH017?

The Grand Seiko SLGH017 carries a 80-hour power reserve against 40 hours on the Praesidus Neptune 44.

What movement does the Praesidus Neptune 44 run compared to the Grand Seiko SLGH017?

Both watches run automatic movements — the Praesidus Neptune 44 uses the Miyota 9039 and the Grand Seiko SLGH017 uses the 9SA5.

Side by side

Praesidus Neptune 44vsGrand Seiko SLGH017

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

Praesidus Neptune 44

neptune-44-brown

MSRP $550

Grand Seiko SLGH017

slgh017g

MSRP $10,500

At a glance

12 of 29 specs differ

Diameter

Neptune 4444mm

SLGH01740mm

Power Reserve

Neptune 4440h

SLGH01780h

Water Resistance

Neptune 44200m

SLGH017100m

MSRP

Neptune 44$550

SLGH017$10,500

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Crystal

Domed Sapphire

Sapphire

AR Coating

Inner

Yes

Dial Color

Patina

Black

Movement

2 specs

Caliber

Miyota 9039

9SA5

Power Reserve

40h

80h

Pricing

1 specs

MSRP

$550

$10,500

Follow this matchup

Get a note when Praesidus Neptune 44 vs Grand Seiko SLGH017 gets more votes, a community discussion, or a price drop. No account needed.

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.

Yemamicro

Adjacent matchups

People also compared

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

Grand Seiko SLGH017vsYema Superman Tourbillon CMM.31 Limited Edition Geckota Ocean-Scout Dive WatchvsGrand Seiko SLGH017 Grand Seiko SLGH017vsYema Superman Titanium Tourbillon CMM.31 Limited Edition Geckota PhalanxvsGrand Seiko SLGH017 Praesidus Neptune 44vsGrand Seiko SLGH005 Praesidus Neptune 44vsGrand Seiko SLGA019

Edit this comparison Add another watch Explore more 39–45mm watches

Praesidus Neptune 44vsGrand Seiko SLGH017

At a glance

Full specifications

Follow this matchup

More watches worth a look

Superman Tourbillon CMM.31 Limited Edition

Autark K2 Small Seconds

Ocean-Scout Dive Watch

Horizon Gen2 Meteorite Dial

Phalanx

The Citizen Caliber 0210

Skin Diver Slim CMM.20

Skindiver Automatic

People also compared