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IWC Schaffhausen Iw357415 Portofino AutomaticvsLongines PrimaLuna 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.

IWC Schaffhausen Iw357415 Portofino Automatic

Owners widely praise the IWC Schaffhausen Iw357415 Portofino Automatic for its clean, classic dress watch aesthetic and elegant, minimalist design, with many appreciating its slim profile. One owner highlights the appealing blue dial color, while another notes it keeps excellent time. However, some question its value proposition, especially given the use of an external movement and its price point relative to competitors. One owner found the watch had a larger presence on the wrist than expected. Overall, owners rate the IWC Schaffhausen Iw357415 Portofino Automatic highly for its classic dress watch aesthetic and elegant design.

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.

From video reviewers

The polished case finishing and flowing curves are praised. The bracelet's non-standard size is a drawback. Reviewers disagree on the movement, with one noting an automatic L899.5 and another specifying a quartz L296.2.

At a glance

18 of 29 specs differ
Diameter
Iw357415 Portofino Automatic34mm
PrimaLuna Moonphase34mm
Power Reserve
Iw357415 Portofino Automatic50h
PrimaLuna Moonphase72h
Water Resistance
Iw357415 Portofino Automatic30m
PrimaLuna Moonphase30m
MSRP
Iw357415 Portofino Automatic$6,500
PrimaLuna Moonphase$2,950

Full specifications

Case

6 specs
Category
Dress
Moonphase
Thickness
8.6mm
11.6mm
Lug-to-Lug
41mm
Lug Width
16mm
8mm
Finish
18 ct 5N gold
Caseback
Transparent case back with sapphire crystal

Crystal & Dial

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

Movement

7 specs
Caliber
35100
Longines L899.5
Beat Rate
28,800 vph
25,200 vph
Power Reserve
50h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date, Moon phase display at 6 o'clock

Pricing

1 specs
MSRP
$6,500
$2,950
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