Side by side

Oak & Oscar The Olmsted ExP-01vsZelos Helica Moonphase

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.

Oak & Oscar The Olmsted ExP-01

Owners widely praise Oak & Oscar The Olmsted ExP-01 for its exceptional finishing, comfortable bracelet, and smooth movement. The dial designs are a frequent point of admiration, with specific appreciation for the white, navy, and gray variants, as well as the orange seconds hand. The watch is considered fairly priced at around $1.5k and is noted for its versatility and "soul." On balance, owners rate Oak & Oscar The Olmsted ExP-01 highly for its overall quality, design, and the brand's customer service.

Zelos Helica Moonphase

Owners widely praise the Zelos Helica Moonphase for its gorgeous aventurine dial, unique industrial-dress aesthetic, and comfortable wearability, with one owner calling it spectacular and another their favorite Zelos. The moonphase complication is frequently highlighted as beautiful, though some find the double moon distracting or the dial cluttered. A manual-wind movement combined with a screw-down crown is noted as a drawback by some, requiring adjustment and potentially feeling fragile when fully wound, while one owner reports a 43-hour power reserve. On balance, owners rate the Zelos Helica Moonphase highly for its stunning aventurine dial and unique design at its price point.

From video reviewers

The aventurine dial is a standout feature. The 39mm case size and short lug-to-lug are praised for comfortable wear. Reviewers did not agree on any specific weaknesses.

At a glance

14 of 29 specs differ
Diameter
The Olmsted ExP-0138mm
Helica Moonphase39mm
Power Reserve
The Olmsted ExP-0142h
Helica Moonphase
Water Resistance
The Olmsted ExP-01100m
Helica Moonphase100m
MSRP
The Olmsted ExP-01$1,775
Helica Moonphase$1,049

Full specifications

Case

5 specs
Category
Field
Moonphase
Diameter
38mm
39mm
Thickness
10.8mm
10mm
Lug-to-Lug
44.9mm
39mm
Material
316L Heat-treated Stainless Steel
316L Stainless Steel

Crystal & Dial

4 specs
Crystal Shape
Double-domed
AR Coating
Underside
Dial Color
Meteorite
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
Sellita SW300-1
Sellita SW288-1
Beat Rate
4 vph
0 vph
Power Reserve
42h
0h
Complications
GMT, Chronograph, Date
None

Pricing

1 specs
MSRP
$1,775
$1,049
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