Side by side

IWC Schaffhausen Iw659602 Portofino Automatic Moon PhasevsLongines PrimaLuna Moonphase

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

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 Iw659602 Portofino Automatic Moon Phase

Owners widely praise the IWC Schaffhausen Portofino for its simple elegance and classic, detail-oriented design, with many appreciating its 37.1mm case size as ideal for smaller wrists or for those accustomed to larger timepieces. Some owners describe it as a "lifetime watch" that is "truly stunning IRL" and a classy option that "flies under the radar." One owner noted their Portofino Automatic stopped working after being dropped and required a two-month repair from IWC. On balance, owners and reviewers rate the IWC Schaffhausen Portofino highly for its elegant aesthetic and comfortable wearability.

Longines PrimaLuna Moonphase

The Longines PrimaLuna Moonphase features a fluid case design and a 72-hour power reserve from its automatic movement. Owners note its accuracy averages 1.3 seconds lost per day across six positions, and 3 to 4 seconds on the wrist, performing within COSC standards. Previously, moon phase models utilized quartz movements, a detail that may not appeal to mechanical watch enthusiasts. Overall, owners rate the Longines PrimaLuna Moonphase highly for its updated automatic movement and reliable timekeeping.

At a glance

19 of 29 specs differ
Diameter
Iw659602 Portofino Automatic Moon Phase37.1mm
PrimaLuna Moonphase34mm
Power Reserve
Iw659602 Portofino Automatic Moon Phase120h
PrimaLuna Moonphase72h
Water Resistance
Iw659602 Portofino Automatic Moon Phase50m
PrimaLuna Moonphase30m
MSRP
Iw659602 Portofino Automatic Moon Phase$9,600
PrimaLuna Moonphase$2,950

Full specifications

Case

7 specs
Diameter
37.1mm
34mm
Thickness
11.3mm
11.6mm
Lug-to-Lug
41mm
Lug Width
18mm
8mm
Finish
18 ct 5N gold
Water Resistance
50m
30m
Caseback
Transparent case back with sapphire crystal

Crystal & Dial

4 specs
AR Coating
Both sides
Dial Color
Silver
Blue
Indices
Diamond indexes
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
32800
L899.5
Beat Rate
28,800 vph
25,200 vph
Power Reserve
120h
72h
Jewels
21
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
Moonphase
Hours, minutes, seconds and date, Moon phase display at 6 o'clock

Pricing

1 specs
MSRP
$9,600
$2,950
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when IWC Schaffhausen Iw659602 Portofino Automatic Moon Phase vs Longines PrimaLuna Moonphase gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.