Side by side

Yema Wristmaster Slim CMM.20vsZelos Helica Moonphase

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

Wristmaster Slim CMM.20
YemaWristmaster Slim CMM.20
MSRP $2,117
Helica Moonphase
ZelosHelica Moonphase
MSRP $1,049

At a glance

7 of 29 specs differ
Diameter
Wristmaster Slim CMM.2039mm
Helica Moonphase39mm
Power Reserve
Wristmaster Slim CMM.2040h
Helica Moonphase40h
Water Resistance
Wristmaster Slim CMM.20100m
Helica Moonphase100m
MSRP
Wristmaster Slim CMM.20$2,117
Helica Moonphase$1,049

Full specifications

Case

4 specs
Category
GMT
Moonphase
Thickness
9mm
10mm
Lug-to-Lug
39mm
Lug Width
24mm
20mm

Crystal & Dial

1 specs
Dial Color
Black
Meteorite

Movement

1 specs
Caliber
Yema CMM.20
Sellita SW288 Moonphase

Pricing

1 specs
MSRP
$2,117
$1,049

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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.

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.

Zelos Helica Moonphase

Owners widely praise the Zelos Helica Moonphase for its gorgeous aventurine dial, unique industrial-dress aesthetic, and comfortable wearability, with one owner calling it spectacular and another their favorite Zelos. The moonphase complication is frequently highlighted as beautiful, though some find the double moon distracting or the dial cluttered. A manual-wind movement combined with a screw-down crown is noted as a drawback by some, requiring adjustment and potentially feeling fragile when fully wound, while one owner reports a 43-hour power reserve. On balance, owners rate the Zelos Helica Moonphase highly for its stunning aventurine dial and unique design at its price point.

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