Side by side

Hamilton Jazzmaster Open Heart AutovsBaltic Heures du Monde - Worldtimer

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
Heures du Monde - Worldtimer
BalticHeures du Monde - Worldtimer
MSRP $1,300
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.

Baltic Heures du Monde - Worldtimer

The Baltic Heures du Monde - Worldtimer is praised for its vintage-inspired design and stone dials, offering a worldtimer complication at an accessible price point. Owners note impressive legibility for a worldtimer, though some find the lack of a seconds hand and the hands themselves ill-suited to the watch's elegance. The use of a diver's bezel is also criticized as uninspired. The watch features a 37mm stainless steel case, a ceramic world time bezel, and is powered by a Soprod C125 GMT movement with a 42-hour power reserve. On balance, owners and reviewers appreciate the Baltic Heures du Monde - Worldtimer's design and value, despite some reservations about specific design choices and its price point.

At a glance

12 of 29 specs differ
Diameter
Jazzmaster Open Heart Auto36mm
Heures du Monde - Worldtimer37mm
Power Reserve
Jazzmaster Open Heart Auto80h
Heures du Monde - Worldtimer42h
Water Resistance
Jazzmaster Open Heart Auto50m
Heures du Monde - Worldtimer100m
MSRP
Jazzmaster Open Heart Auto$2,695
Heures du Monde - Worldtimer$1,300

Full specifications

Case

6 specs
Category
Chronograph
World Timer
Diameter
36mm
37mm
Thickness
10mm
11.3mm
Lug-to-Lug
46mm
45mm
Lug Width
18mm
20mm
Water Resistance
50m
100m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Mother of pearl
Worldtimer - Labradorite
Lume
None
BGW9

Movement

2 specs
Caliber
H-10
Soprod C125 GMT
Power Reserve
80h
42h

Pricing

1 specs
MSRP
$2,695
$1,300
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