Side by side

Massena LAB Dato-RacervsHalios Seaforth IV

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

Dato-Racer
Massena LABDato-Racer
MSRP $1,595
Seaforth IV
HaliosSeaforth IV
MSRP $765

At a glance

12 of 29 specs differ
Diameter
Dato-Racer40mm
Seaforth IV40mm
Power Reserve
Dato-Racer38h
Seaforth IV40h
Water Resistance
Dato-Racer50m
Seaforth IV200m
MSRP
Dato-Racer$1,595
Seaforth IV$765

Full specifications

Case

5 specs
Category
Sport
Diver
Thickness
10.5mm
12.4mm
Lug-to-Lug
46mm
46.5mm
Material
Stainless Steel
Titanium
Water Resistance
50m
200m

Crystal & Dial

3 specs
Crystal
Sapphire
Sapphire (double-domed)
AR Coating
Yes
Inner
Dial Color
Black
Blue

Movement

3 specs
Caliber
SW400-1
Sellita SW200-2
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$1,595
$765

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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.

Halios Seaforth IV

Owners widely praise the Halios Sunburst Blue for its perfect 40mm size, stunning sunburst dial, and excellent lume, with one owner calling it Halios's best effort and a potential "Omega AT killer." The ETA 2824 movement is noted as running smoothly, and the watch is considered a great value with strong resale. Some owners desire larger sizes or different dial colors, and one reviewer found the Sinn 556i more versatile. The sapphire bezel is described as tall and flat, which is a point of contention for some. Overall, owners rate the Halios Sunburst Blue highly for its design, size, and value.

From video reviewers

The sunburst blue dial is a standout feature. Limited water resistance is a shared concern.

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