Side by side

Formex Reef 39.5 mmvsEcho/Neutra Rivanera

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
Rivanera
Echo/NeutraRivanera
MSRP $1,810

At a glance

17 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Rivanera40mm
Power Reserve
Reef 39.5 mm56h
Rivanera42hh
Water Resistance
Reef 39.5 mm300m
Rivanera30m
MSRP
Reef 39.5 mm$2,230
Rivanera$1,810

Full specifications

Case

8 specs
Category
Diver
Diameter
39.5mm
40mm
Thickness
11mm
5.5mm
Lug-to-Lug
45.5mm
40mm
Lug Width
22mm
20mm
Material
Stainless Steel
Titanium Grade 5 (sandblasted)
Finish
Brushed and polished
Polished + Sandblasted
Water Resistance
300m
30m

Crystal & Dial

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

Movement

6 specs
Caliber
Sellita SW300-1
Swiss ETA 7001 elaboré
Type
Automatic
Manual
Beat Rate
28,800 vph
21,600 vph
Power Reserve
56h
42hh
Jewels
25
17
Complications
None
Moonphase, Date

Pricing

1 specs
MSRP
$2,230
$1,810

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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.

Echo/Neutra Rivanera

The Echo/Neutra Rivanera is widely praised for its remarkably thin 5.9mm Grade 5 titanium case, which contributes to its exceptional lightness and wearability, striking a balance between dress and everyday style. Reviewers and owners highlight its Art Deco-inspired design and the respected ETA 7001 manual-wind movement for its slimness and longevity. Impressive packaging and accessories are also noted as significant value adds for its price point. Some reviewers point out the lack of quick-release straps and the bead-blasted finish, with one owner expressing concern over the case's scratch resistance. The non-hacking movement is also a point of note for some enthusiasts. Overall, owners and reviewers highly regard the Echo/Neutra Rivanera for its exceptionally thin and lightweight titanium case and unique Art Deco aesthetic at an affordable price.

From video reviewers

The Rivanera's Grade 5 titanium case is a key selling point. Reviewers did not agree on whether the watch leans more towards a tool watch or a traditional dress watch.

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