Side by side

Halios Seaforth IVvsYema Wristmaster Slim CMM.20

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

Seaforth IV
HaliosSeaforth IV
MSRP $765
Wristmaster Slim CMM.20
YemaWristmaster Slim CMM.20
MSRP $2,117

At a glance

11 of 29 specs differ
Diameter
Seaforth IV40mm
Wristmaster Slim CMM.2039mm
Power Reserve
Seaforth IV40h
Wristmaster Slim CMM.2040h
Water Resistance
Seaforth IV200m
Wristmaster Slim CMM.20100m
MSRP
Seaforth IV$765
Wristmaster Slim CMM.20$2,117

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
40mm
39mm
Thickness
12.4mm
9mm
Lug-to-Lug
46.5mm
Lug Width
20mm
24mm
Material
Titanium
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

2 specs
Crystal
Sapphire (double-domed)
Sapphire
Dial Color
Blue
Black

Movement

1 specs
Caliber
Sellita SW200-2
Yema CMM.20

Pricing

1 specs
MSRP
$765
$2,117

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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.

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.

Yema Wristmaster Slim CMM.20

The Yema Wristmaster Slim CMM.20 is widely praised for its compelling integrated bracelet design and comfortable 39mm wearability. Reviewers highlight its impressive value, featuring an in-house CMM.20 micro-rotor movement with a 70-hour power reserve, adjusted to -3/+7 seconds per day, all within a slim 9mm case. Some note the domed sapphire crystal can produce glare and the dial text is quite small. On balance, reviewers rate the Yema Wristmaster Slim CMM.20 highly for its integrated design and value proposition with a micro-rotor movement.

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