Bremont Terra Nova 42.5 ChronographvsHamilton Jazzmaster Auto Chrono

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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.

Bremont Terra Nova 42.5 Chronograph at true scale

Terra Nova 42.5 Chronograph

Hamilton Jazzmaster Auto Chrono at true scale

Jazzmaster Auto Chrono

Diameter

42.5mm

42mm

Thickness

14.8mm

lowest

15.2mm

Water Resistance

100m

100m

Power Reserve

n/a

60h

MSRP

$4,950

$2,095

lowest

Movement

Bremont ENG345

Hamilton H-21

Case

5 specs
Diameter
42.5mm
42mm
Thickness
14.8mm
15.23mm
Lug-to-Lug
n/a
n/a
Lug Width
14.8mm
22mm
Material
316L Stainless Steel
Stainless Steel

Movement

2 specs
Caliber
Bremont ENG345
Hamilton H-21
Power Reserve
0h
60h

Pricing

1 specs
MSRP
$4,950
$2,095
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Reviews

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

Bremont Terra Nova 42.5 Chronograph

Owners report the DLC coating on the Bremont Terra Nova 42.5 Chronograph is durable, though one noted a ding on the barrel. The chronograph hand resets slightly off-center for one owner. Reviewers describe the 42.5mm case as blocky with satin finishing and minimal polishing, noting its 48.8mm lug-to-lug and 14.8mm thickness felt bulky on leather but improved with elastic or rubber straps. The winding action is satisfying, and the chronograph pushers are crisp, though the start/stop pusher requires significant force. The Cupro-Aluminium case is expected to patina over time, and the watch features a bi-directional bronze compass bezel with a black ceramic insert and a green gradient dial with full-block Super-LumiNova numerals. The rear sapphire caseback on a prototype was too dark to appreciate the movement, and text around a tourbillon window detracted from the dial.

Hamilton Jazzmaster Auto Chrono

Owners widely praise the Hamilton Jazzmaster Auto Chrono for its excellent value and substantial, dressy appearance, with many noting its superior quality and finish compared to other brands. The H-21 movement offers a 60-hour power reserve, though its thickness makes the watch unsuitable for those seeking a slim profile. Some owners express a preference for a 3-6-9 subdial layout or a smaller case size. On balance, owners rate the Hamilton Jazzmaster Auto Chrono highly for its strong value proposition and appealing aesthetic.

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