Hamilton Jazzmaster Maestro Auto ChronovsIWC Schaffhausen Iw378001 Pilot's Watch Chronograph

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Hamilton Jazzmaster Maestro Auto Chrono at true scale

Jazzmaster Maestro Auto Chrono

IWC Schaffhausen Iw378001 Pilot's Watch Chronograph at true scale

Iw378001 Pilot's Watch Chronograph

Diameter

45mm

43mm

Thickness

15.3mm

14.8mm

lowest

Water Resistance

100m

100m

Power Reserve

60h

highest

46h

MSRP

$1,995

lowest

$7,700

Movement

Hamilton H-21

69385

Case

5 specs
Diameter
45mm
43mm
Thickness
15.35mm
14.8mm
Lug-to-Lug
n/a
n/a
Lug Width
23mm
21mm
Finish
n/a
Steel

Crystal & Dial

1 specs
Dial Color
Blue
Black

Movement

7 specs
Caliber
Hamilton H-21
69385
Beat Rate
0 vph
28,800 vph
Power Reserve
60h
46h
Jewels
0
33
Hacking
No
Yes
Hand-winding
No
Yes
Complications
None
Chronograph

Pricing

1 specs
MSRP
$1,995
$7,700
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Reviews

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

Hamilton Jazzmaster Maestro Auto Chrono

Owners widely praise the Hamilton Jazzmaster Maestro Auto Chrono's premium case finishing and versatile dial layout, suitable for both casual and formal wear. Some owners note the 45mm size can be bulky and may not fit under shirt cuffs, and a lack of a second hand is a deal-breaker for some. Accuracy figures range from gaining about 5 seconds per day to keeping time within 10 seconds per day even after many years without service. Concerns exist regarding the serviceability and potential maintenance costs of the H-21 movement. Overall, owners rate the Hamilton Jazzmaster Maestro Auto Chrono highly for its substantial build quality and attractive design despite some size and movement serviceability considerations.

From video reviewers

The Valjoux 7750 chronograph movement is cited as a strength. Reviewers noted the movement is not without flaws.

IWC Schaffhausen Iw378001 Pilot's Watch Chronograph

The IWC Schaffhausen Iw378001 Pilots Watch Chronograph is praised for its balanced, logical, and historically steeped design, offering an elegant average of pilot watch expectations with a comfortable, masculine 43mm wearability. Its dial design is considered exceptionally effective, though some find the classic look a bit generic. Owners report exceptional quality and execution of IWC chronographs, with one considering them the best pilot watches available, especially when purchased grey market to align with perceived value. One owner notes a concerning misalignment of the index at 3, raising quality control concerns. Overall, owners and reviewers rate the IWC Schaffhausen Iw378001 Pilots Watch Chronograph highly for its effective dial design and comfortable wearability, with some noting specific quality control issues.

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