Side by side

IWC Schaffhausen Iw459403 Portofino Automatic Moon PhasevsZelos Helica Moonphase

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

Helica Moonphase
ZelosHelica Moonphase
MSRP $1,049
What people say

Owners + reviewers, side by side

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

IWC Schaffhausen Iw459403 Portofino Automatic Moon Phase

Owners widely praise the IWC Schaffhausen Portofino for its stunning and elegant design, with many finding the 40mm size wearability excellent, even on smaller wrists. The clean dial and classical sophistication are frequently highlighted, and some owners describe it as a "lifetime watch." One owner notes their watch keeps excellent time, with another mentioning IWC's commitment to chronometer standards. A different Portofino 37 variant was reported to lose almost 10 seconds a day. On balance, owners and reviewers rate the IWC Schaffhausen Portofino highly for its elegant design and comfortable wearability.

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.

At a glance

16 of 29 specs differ
Diameter
Iw459403 Portofino Automatic Moon Phase40mm
Helica Moonphase39mm
Power Reserve
Iw459403 Portofino Automatic Moon Phase50h
Helica Moonphase40h
Water Resistance
Iw459403 Portofino Automatic Moon Phase30m
Helica Moonphase100m
MSRP
Iw459403 Portofino Automatic Moon Phase$7,700
Helica Moonphase$1,049

Full specifications

Case

7 specs
Diameter
40mm
39mm
Thickness
11.1mm
10mm
Lug-to-Lug
39mm
Material
Stainless Steel
316L Stainless Steel
Finish
18 ct 5N gold
Brushed and polished
Water Resistance
30m
100m
Caseback
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Silver
Meteorite
Indices
Applied

Movement

3 specs
Caliber
35800
Sellita SW288 Moonphase
Power Reserve
50h
40h
Complications
Moonphase
None

Pricing

1 specs
MSRP
$7,700
$1,049
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