Side by side

Lum-Tec EclipsevsFormex Reef 39.5 mm

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

Eclipse
Lum-TecEclipse
MSRP $695
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

12 of 29 specs differ
Diameter
Eclipse42mm
Reef 39.5 mm39.5mm
Power Reserve
Eclipse40h
Reef 39.5 mm56h
Water Resistance
Eclipse101m
Reef 39.5 mm300m
MSRP
Eclipse$695
Reef 39.5 mm$2,230

Full specifications

Case

7 specs
Category
Sport
Diver
Diameter
42mm
39.5mm
Thickness
11mm
Lug-to-Lug
45.5mm
Lug Width
22mm
Material
316L Stainless Steel (DLC coated)
Stainless Steel
Water Resistance
101m
300m

Crystal & Dial

2 specs
Dial Color
E6
Bahama Blue
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
Miyota 9039
Sellita SW300-1
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$695
$2,230

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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.

Lum-Tec Eclipse

Owners widely praise the Lum-Tec Eclipse for its comfortable, slim profile and thin wearability, with specific commendations for its beautiful dial, good readability, and bracelet design. The knurling on the crown is also noted as a positive feature. Some owners express concern over the 42mm case size and find the dial's font and indices unappealing, though others appreciate the deep-dish slant. One owner notes a slight gap where the lugs meet the bracelet. The Lum-Tec Eclipse e3 variant features a Miyota 9039 movement, a solid bracelet, a sunburst dial, and exceptionally bright lume. Overall, owners rate the Lum-Tec Eclipse highly for its slim design and attractive dial at its price point.

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.

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