Henry Archer TidevandvsZelos Helica

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Henry Archer Tidevand at true scale

Tidevand

Zelos Helica at true scale

Helica

Diameter

40mm

39mm

Lug-to-Lug

47mm

n/a

Thickness

10.7mm

10.5mm

lowest

Water Resistance

200m

highest

100m

MSRP

$652

$499

lowest

Movement

Miyota 9015

Miyota 9015

Case

4 specs
Diameter
40mm
39mm
Thickness
10.65mm
10.5mm
Lug-to-Lug
47mm
n/a
Water Resistance
200m
100m

Crystal & Dial

1 specs
Dial Color
Grey
39 - Wave MOP

Pricing

1 specs
MSRP
$652
$499
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Henry Archer Tidevand

Owners widely praise the Henry Archer Tidevand for its exceptional finishing, noting wonderful brushing and beveled polished edges, alongside a spectacular Aventurine dial that evokes a sense of space. Lume is also a standout feature, described as "off the charts" even on the date wheel numerals. The watch is recognized as a purpose-built dive watch with a 120-click bezel and strong nighttime visibility, balancing rugged construction with refined finishing. One owner reported tight bracelet push pins, which was resolved by customer service. The 40mm case is noted as being 10.65mm thin. On balance, owners rate the Henry Archer Tidevand highly for its striking Aventurine dial and excellent lume at its price point.

From video reviewers

The unique gemstone dial is a standout feature. The polished tungsten bezel is a fingerprint magnet. Reviewers disagreed on the practicality of an all-orange watch for daily wear.

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.

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