Side by side

CWC 6BB-WRvsHamilton Jazzmaster Open Heart Auto

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

6BB-WR
CWC6BB-WR
MSRP $1,875
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

CWC 6BB-WR

The CWC 6BB-WR is widely praised for its legible matte black dial, strong lume, and crisp chronograph operation. Owners and reviewers note its military heritage and rugged, confidence-inspiring build with a screw-down crown and pushers. The Sellita SW510 BH b automatic movement kept time within COSC range in testing. However, its 14.9mm thickness and 80g weight make it wear large, and the cam-lever movement lacks the satisfying click of a column wheel. Fixed bars limit strap options. On balance, owners and reviewers rate the CWC 6BB-WR highly for its legible dial and robust pilot chronograph design at its price point.

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.

At a glance

9 of 29 specs differ
Diameter
6BB-WR42mm
Jazzmaster Open Heart Auto36mm
Power Reserve
6BB-WR40h
Jazzmaster Open Heart Auto80h
Water Resistance
6BB-WR100m
Jazzmaster Open Heart Auto50m
MSRP
6BB-WR$1,875
Jazzmaster Open Heart Auto$2,695

Full specifications

Case

5 specs
Diameter
42mm
36mm
Thickness
14.9mm
10mm
Lug-to-Lug
49mm
46mm
Lug Width
20mm
18mm
Water Resistance
100m
50m

Crystal & Dial

1 specs
Dial Color
CWC 6BB-WR
Mother of pearl

Movement

2 specs
Caliber
Sellita SW510
H-10
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$1,875
$2,695
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