Side by side

Oris Great Barrier Reef Limited Edition IVvsGrand Seiko SLGB023

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

Great Barrier Reef Limited Edition IV
OrisGreat Barrier Reef Limited Edition IV
MSRP $4,750
SLGB023
Grand SeikoSLGB023
MSRP $12,400

At a glance

18 of 29 specs differ
Diameter
Great Barrier Reef Limited Edition IV43.5mm
SLGB02340.8mm
Power Reserve
Great Barrier Reef Limited Edition IV120 hoursh
SLGB02372h
Water Resistance
Great Barrier Reef Limited Edition IV300m
SLGB023300m
MSRP
Great Barrier Reef Limited Edition IV$4,750
SLGB023$12,400

Full specifications

Case

7 specs
Diameter
43.5mm
40.8mm
Thickness
12.9mm
Lug-to-Lug
48.5mm
Lug Width
23mm
21mm
Material
Stainless Steel
Titanium
Finish
Brushed and polished
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Underside
Yes
Dial Color
Blue
Black
Indices
Applied

Movement

6 specs
Caliber
CALIBRE 400
9RB1
Type
Automatic
Spring Drive
Beat Rate
4 vph
28,800 vph
Power Reserve
120 hoursh
72h
Jewels
21
25
Complications
Date
None

Pricing

1 specs
MSRP
$4,750
$12,400

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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.

Oris Great Barrier Reef Limited Edition IV

The Oris Great Barrier Reef Limited Edition IV's 43.55mm case is surprisingly wearable on a 7-inch wrist due to its new design. Owners report the Oris Great Barrier Reef III, a 45mm watch, is massive and nearly 20mm thick. Overall, owners find the Oris Great Barrier Reef Limited Edition IV wearable despite its size, citing its new design as a key factor.

From video reviewers

The striking turquoise-to-navy gradient dial is a notable feature. The 43.5mm stainless steel case is noted for its ergonomic fit.

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.

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