Side by side

Oak & Oscar The Humboldt GMT SAR EditionvsZelos Hammerhead V3 300m Titanium

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

The Humboldt GMT SAR Edition
Oak & OscarThe Humboldt GMT SAR Edition
MSRP $2,950
Hammerhead V3 300m Titanium
ZelosHammerhead V3 300m Titanium
MSRP $559

At a glance

17 of 29 specs differ
Diameter
The Humboldt GMT SAR Edition39.5mm
Hammerhead V3 300m Titanium44mm
Power Reserve
The Humboldt GMT SAR Edition56 hoursh
Hammerhead V3 300m Titanium40h
Water Resistance
The Humboldt GMT SAR Edition200m
Hammerhead V3 300m Titanium300m
MSRP
The Humboldt GMT SAR Edition$2,950
Hammerhead V3 300m Titanium$559

Full specifications

Case

8 specs
Category
GMT
Diver
Diameter
39.5mm
44mm
Thickness
12.5mm
13mm
Lug-to-Lug
46.8mm
44mm
Lug Width
20mm
22mm
Material
Grade 5 Titanium
Titanium
Water Resistance
200m
300m
Caseback
Solid screw-down
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Inner
Dial Color
Black
Ti - Mosaic MOP
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW330
Seiko NH35
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
40h

Pricing

1 specs
MSRP
$2,950
$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.

Oak & Oscar The Humboldt GMT SAR Edition

Oak & Oscar The Humboldt GMT SAR Edition is praised for its anti-magnetic properties, sandwich lume dial, and overall construction quality for its price point. It features a brushed Grade 5 titanium case, a navy blue sandwich dial with an orange minute track and seconds hand, and a Sellita SW330 movement with a 56-hour power reserve. Minor drawbacks noted include bracelet sizing adjustment and lume brightness. On balance, owners and reviewers rate Oak & Oscar The Humboldt GMT SAR Edition highly for its robust construction and unique dial design at its price point.

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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