Blancpain Fifty Fathoms AutomatiquevsFormex Reef 42 mm

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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.

Fifty Fathoms Automatique

Reef 42 mm
Diameter
42.3mm
42mm
Lug-to-Lug
n/a
47mm
Thickness
14.3mm
11.4mm
lowest
Water Resistance
300m
300m
Power Reserve
120h
highest
56h
MSRP
$20,300
$2,414
lowest
Movement
1315
Sellita SW300-1
Case
6 specsCrystal & Dial
2 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Blancpain Fifty Fathoms Automatique is widely praised for its timeless design, excellent legibility, and high-quality finishing, with reviewers noting its comfortable wearability and robust tool watch build. Owners and reviewers consistently highlight the excellent bezel action and the dial's legibility, particularly underwater, attributing this to generous Super-LumiNova application and classic dial design. The in-house 1315 automatic movement is noted for its five-day power reserve, and its haute horlogerie finishing is visible through the case back. Some critiques include the engraved case name, the uncommon strap width, and the 4:30 date window. On balance, owners and reviewers rate the Blancpain Fifty Fathoms Automatique highly for its blend of historical significance, refined finishing, and practical dive watch functionality.
Owners widely praise the Formex Reef 42 mm for its comfortable bracelet with a micro-adjust clasp and its overall build and finish, with one owner strongly recommending it. Reviewers highlight its impressive wearability and versatility, noting the COSC-certified Sellita SW300-1 movement and well-finished bracelet. One owner found the lugs' taper hinders third-party strap fit and observed the seconds hand does not perfectly align with markers. On balance, owners and reviewers rate the Formex Reef 42 mm highly for its comfortable bracelet and solid build at its price point.
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