Which is cheaper, the Halios Universa II or the Undone Calavera Neón?

At MSRP the Undone Calavera Neón is the cheaper of the two at $365, against $995 for the Halios Universa II — a $630 gap before any retailer discounting.

Which is bigger, the Halios Universa II or the Undone Calavera Neón?

The Undone Calavera Neón wears larger at 40mm versus 38mm for the Halios Universa II — a 2mm difference across the dial.

Which has better water resistance, the Halios Universa II or the Undone Calavera Neón?

The Halios Universa II is rated to 100m versus 30m for the Undone Calavera Neón.

What movement does the Halios Universa II run compared to the Undone Calavera Neón?

The Halios Universa II runs a automatic caliber (Sellita SW300-1), while the Undone Calavera Neón runs a quartz (Seiko VK64).

Side by side

Halios Universa IIvsUndone Calavera Neón

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

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Halios Universa II

MSRP $995

See the full Universa II

Undone Calavera Neón

MSRP $365

See the full Calavera Neón

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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.

Halios Universa II

Owners widely praise the Halios Universa II for its applied indices, excellent finishing for the price, and comfortable 38mm dimensions. The integrated bracelet design with a satisfying micro-adjust clasp and case architecture are described as masterclasses. However, some find the bracelet clasp chunkier than the overall design, and the angular lug design is noted as not being for everyone. One owner reported unexpected pastel dial colors and a poor winding action. On balance, owners rate the Halios Universa II highly for its applied indices and excellent finishing at the price point.

From video reviewers

The pastel blue dial is a standout feature. The push-pin crown is a potential drawback.

WatchUSeek

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.