Side by side

Hamilton Jazzmaster Open Heart AutovsIWC Schaffhausen Iw357415 Portofino Automatic

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.

Hamilton Jazzmaster Open Heart Auto

The Hamilton Jazzmaster Open Heart Auto is noted for its dressy yet versatile design, featuring striking gradient dials and intricately shaped cutouts that reveal the H-10 movement. It boasts an 80-hour power reserve and Nivachron hairspring. The watch is available in 36mm, 40mm, or 42mm stainless steel cases. On balance, the Hamilton Jazzmaster Open Heart Auto is appreciated for its visually engaging dial and movement display at its price point.

From video reviewers

The smoked dial's precision cutouts offer a captivating view of the automatic movement. Legibility is compromised by the open-heart design.

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.

At a glance

15 of 29 specs differ
Diameter
Jazzmaster Open Heart Auto36mm
Iw357415 Portofino Automatic34mm
Power Reserve
Jazzmaster Open Heart Auto80h
Iw357415 Portofino Automatic50h
Water Resistance
Jazzmaster Open Heart Auto50m
Iw357415 Portofino Automatic30m
MSRP
Jazzmaster Open Heart Auto$2,695
Iw357415 Portofino Automatic$6,500

Full specifications

Case

7 specs
Category
Chronograph
Dress
Diameter
36mm
34mm
Thickness
10mm
8.6mm
Lug-to-Lug
0mm
Lug Width
18mm
16mm
Finish
18 ct 5N gold
Water Resistance
50m
30m

Crystal & Dial

1 specs
Dial Color
Mother of pearl
Green

Movement

6 specs
Caliber
H-10
35100
Beat Rate
0 vph
28,800 vph
Power Reserve
80h
50h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$2,695
$6,500
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