Side by side

Undone Calavera NeónvsZelos Helica

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

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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.

Undone Calavera Neón

The dial's vibrant colors under UV light are a standout feature. The watch uses a Seiko VK61 or TMI VK64 mechanical-quartz hybrid flyback chronograph movement.

Zelos Helica

Owners widely praise the Zelos Helica for its stunning, often color-shifting dials, with specific mentions of the MoP, slate grey, 'Steel Blue', and red opal variants being particularly captivating and artful. The 39mm case size is noted as fitting well on smaller wrists, and the overall build quality and finishing for the price are frequently highlighted as impressive, with one owner calling it "a lot of watch for the price." Some owners appreciate the novel bracelet designs and full lume dials, while others find the bracelet and clasp edges sharp or the clasp lacking on-the-fly adjustment. Opinions on the date window are mixed, with one owner disliking it. The Zelos Helica Moonphase was considered cluttered by one owner, and its $1K USD price point was felt to be steep by another, though popular variants sold out rapidly. Overall, owners rate the Zelos Helica highly for its striking dial designs and impressive value proposition.

From video reviewers

The dial's texture and visual appeal are consistently praised. The bracelet clasp with dual micro-adjustments is also a shared positive point. Reviewers disagree on whether the Miyota 9015 movement is a drawback compared to higher-end options.

At a glance

13 of 29 specs differ
Diameter
Calavera Neón40mm
Helica39mm
Power Reserve
Calavera Neón
Helica
Water Resistance
Calavera Neón30m
Helica100m
MSRP
Calavera Neón$365
Helica$499

Full specifications

Case

7 specs
Category
Diver
Diameter
40mm
39mm
Thickness
0mm
10.5mm
Lug-to-Lug
0mm
39mm
Lug Width
0mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
30m
100m

Crystal & Dial

2 specs
Crystal
Sapphire
Dial Color
39 - Wave MOP

Movement

3 specs
Caliber
Seiko VK64
Miyota 9015
Type
Quartz
Automatic
Power Reserve
0h

Pricing

1 specs
MSRP
$365
$499
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