Side by side

Sternglas Naos SolarvsZelos Hammerhead V3 300m Titanium

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

Naos Solar
SternglasNaos Solar
MSRP $323
Hammerhead V3 300m Titanium
ZelosHammerhead V3 300m Titanium
MSRP $559

At a glance

15 of 29 specs differ
Diameter
Naos Solar38mm
Hammerhead V3 300m Titanium44mm
Power Reserve
Naos Solar
Hammerhead V3 300m Titanium40h
Water Resistance
Naos Solar50m
Hammerhead V3 300m Titanium300m
MSRP
Naos Solar$323
Hammerhead V3 300m Titanium$559

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
38mm
44mm
Thickness
10mm
13mm
Lug-to-Lug
42mm
44mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
50m
300m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Ti - Mosaic MOP
Lume
Luminova Punkten
None

Movement

4 specs
Caliber
Seiko VJ76
Seiko NH35
Type
Solar
Automatic
Power Reserve
40h
Jewels
25

Pricing

1 specs
MSRP
$323
$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.

Sternglas Naos Solar

Owners widely praise the Sternglas Naos Solar for its elegant Bauhaus-inspired minimalist dial, slim profile, and value for money. The scratch-resistant curved sapphire crystal and functional date mechanism are noted as durable features, with one owner reporting good wear over a year. The solar power and accuracy are highlighted as practical advantages over automatic movements, which some find loud. However, opinions are split, with some owners finding the watch underwhelming and cheap-looking, like a toy, while others love its appearance in person and its clean, appealing design as a smartwatch alternative. The stock leather strap is described as decent but basic and potentially short for larger wrists, with one owner advising a third-party replacement for durability. One owner of a different variant noted the date font is too small to be useful.

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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