Side by side

Formex Reef 39.5 mmvsLongines CONQUEST HERITAGE CENTRAL POWER RESERVE

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

Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230
CONQUEST HERITAGE CENTRAL POWER RESERVE
LonginesCONQUEST HERITAGE CENTRAL POWER RESERVE
MSRP $4,300

At a glance

11 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
CONQUEST HERITAGE CENTRAL POWER RESERVE38mm
Power Reserve
Reef 39.5 mm56h
CONQUEST HERITAGE CENTRAL POWER RESERVE40h
Water Resistance
Reef 39.5 mm300m
CONQUEST HERITAGE CENTRAL POWER RESERVE50m
MSRP
Reef 39.5 mm$2,230
CONQUEST HERITAGE CENTRAL POWER RESERVE$4,300

Full specifications

Case

6 specs
Category
Diver
Diameter
39.5mm
38mm
Thickness
11mm
12.3mm
Lug-to-Lug
45.5mm
45.6mm
Lug Width
22mm
19mm
Water Resistance
300m
50m

Crystal & Dial

2 specs
Dial Color
Bahama Blue
Black
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW300-1
L896
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,230
$4,300

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What people say

Owners + reviewers, side by side

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

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

Longines CONQUEST HERITAGE CENTRAL POWER RESERVE

The Longines Conquest Heritage Central Power Reserve is widely praised for its beautiful, timeless, 1959-inspired dial and unique central power reserve indicator, with owners considering it a top dress watch in its price segment. Reviewers highlight its balanced layout and contemporary 38mm size, while some owners find the short lugs contribute to a comfortable wear. The watch features a modern 72-hour power reserve movement and is priced at $3,800. One reviewer notes the lugs are not curved enough, potentially creating a gap with the strap, though owners report the alligator strap softens with wear and some find the watch slightly chunky. A potential frustration for some owners is the power reserve indicator not always resetting to the same position when fully wound. On balance, owners and reviewers rate the Longines Conquest Heritage Central Power Reserve highly for its handsome vintage aesthetic and unique power reserve complication at an appropriate price.

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