Side by side

Oris Great Barrier Reef Limited Edition IVvsZelos Hammerhead V3 300m Titanium

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
Hammerhead V3 300m Titanium
ZelosHammerhead V3 300m Titanium
MSRP $559

At a glance

18 of 29 specs differ
Diameter
Great Barrier Reef Limited Edition IV43.5mm
Hammerhead V3 300m Titanium44mm
Power Reserve
Great Barrier Reef Limited Edition IV120 hoursh
Hammerhead V3 300m Titanium40h
Water Resistance
Great Barrier Reef Limited Edition IV300m
Hammerhead V3 300m Titanium300m
MSRP
Great Barrier Reef Limited Edition IV$4,750
Hammerhead V3 300m Titanium$559

Full specifications

Case

7 specs
Diameter
43.5mm
44mm
Thickness
13mm
Lug-to-Lug
44mm
Lug Width
23mm
22mm
Material
Stainless Steel
Titanium
Finish
Brushed and polished
Caseback
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Blue
Ti - Mosaic MOP
Indices
Applied

Movement

5 specs
Caliber
CALIBRE 400
Seiko NH35
Beat Rate
4 vph
28,800 vph
Power Reserve
120 hoursh
40h
Jewels
21
25
Complications
Date
None

Pricing

1 specs
MSRP
$4,750
$559

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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.

Zelos Hammerhead V3 300m Titanium

The Zelos Hammerhead V3 300m Titanium is widely praised for its exceptional lume, unique and beautiful dial finishing that reflects light dramatically, and solid build quality that exceeds its price point. Owners also highlight its comfortable wearability, especially the lightweight titanium variant, and the convenient on-the-fly micro-adjustment on the bracelet. One owner notes the Japanese movement performs better than anticipated, and the Ti-Damascus variant features a unique, patterned dial and bezel. However, some owners find the 44mm size large, the crown "off," and the bracelet clasp could be more scratch-resistant, with resizing pins described as stubborn. Reattaching the bracelet after removal is also noted as extremely difficult. Overall, owners rate the Zelos Hammerhead V3 300m Titanium highly for its impressive dial aesthetics and value for money.

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