Side by side

Hamilton Jazzmaster Open Heart AutovsLongines CONQUEST

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

Jazzmaster Open Heart Auto
HamiltonJazzmaster Open Heart Auto
MSRP $2,695
CONQUEST
LonginesCONQUEST
MSRP $4,750

At a glance

19 of 29 specs differ
Diameter
Jazzmaster Open Heart Auto36mm
CONQUEST30mm
Power Reserve
Jazzmaster Open Heart Auto80h
CONQUEST
Water Resistance
Jazzmaster Open Heart Auto50m
CONQUEST100m
MSRP
Jazzmaster Open Heart Auto$2,695
CONQUEST$4,750

Full specifications

Case

8 specs
Category
Chronograph
Diameter
36mm
30mm
Thickness
10mm
9.7mm
Lug-to-Lug
46mm
37.8mm
Lug Width
18mm
15mm
Finish
Brushed and polished
Water Resistance
50m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Mother of pearl
White
Indices
Applied

Movement

6 specs
Caliber
H-10
L592.5
Beat Rate
28,800 vph
0 vph
Power Reserve
80h
0h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$2,695
$4,750

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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.

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.

Longines CONQUEST

Owners widely praise the Longines CONQUEST for its excellent price-performance ratio, high-quality finishing, and versatile design, with many highlighting its comfortable wearability due to curved lugs. The smooth winding action and attractive dial colors are also frequently cited positives. However, reviewers and owners consistently note the bracelet's lack of on-the-go micro-adjustment, which can impact fit, and several find the lume to be weak. One owner reported the crown and guards rubbing against the wrist when typing. On balance, owners and reviewers rate the Longines CONQUEST highly for its impressive finishing and value, despite minor bracelet and lume drawbacks.

From video reviewers

The watch's wearable case size and dial work are highlighted as strengths. The bracelet's end-link fit is cited as a weakness.

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