Side by side

Massena LAB Dato-RacervsFormex Reef 39.5 mm

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

Dato-Racer
Massena LABDato-Racer
MSRP $1,595
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

13 of 29 specs differ
Diameter
Dato-Racer40mm
Reef 39.5 mm39.5mm
Power Reserve
Dato-Racer38h
Reef 39.5 mm56h
Water Resistance
Dato-Racer50m
Reef 39.5 mm300m
MSRP
Dato-Racer$1,595
Reef 39.5 mm$2,230

Full specifications

Case

6 specs
Category
Sport
Diver
Diameter
40mm
39.5mm
Thickness
10.5mm
11mm
Lug-to-Lug
46mm
45.5mm
Lug Width
20mm
22mm
Water Resistance
50m
300m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Black
Bahama Blue
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
SW400-1
Sellita SW300-1
Power Reserve
38h
56h
Jewels
26
25

Pricing

1 specs
MSRP
$1,595
$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.

Massena LAB Dato-Racer

Owners widely praise the Massena LAB Dato-Racer as an excellent everyday watch, appreciating its blend of 1970s-inspired aesthetics with modern dimensions. This model is a limited edition of 99 pieces. On balance, owners rate the Massena LAB Dato-Racer highly for its successful fusion of vintage design and contemporary wearability.

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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