Side by side

Longines MASTER COLLECTION CHRONO MOONPHASEvsYema Superman Slim CMM.20

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

MASTER COLLECTION CHRONO MOONPHASE
LonginesMASTER COLLECTION CHRONO MOONPHASE
MSRP $4,400
Superman Slim CMM.20
YemaSuperman Slim CMM.20
MSRP $2,372
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Longines MASTER COLLECTION CHRONO MOONPHASE

Owners widely praise the Longines MASTER COLLECTION CHRONO MOONPHASE for its mesmerizing dial and value, offering numerous complications at its price point. However, its 3 bar water resistance limits wearability, and some find the dial busy with the chronograph hour pointer obscuring the moonphase. One owner noted it is a "thick boi" and the blue is less vibrant than pictured, while another mentioned scuffs on the case and discrepancies with the rotor weight and column wheel compared to the website. The consensus is that the Longines MASTER COLLECTION CHRONO MOONPHASE is a gorgeous, high-horology offering for its price, despite some functional limitations and aesthetic critiques.

Yema Superman Slim CMM.20

Owners and reviewers praise the Yema Superman Slim CMM.20 for its appealing retro design, balanced 39mm case, and in-house CMM.20 micro-rotor movement, with some finding the fish scale bracelet attractive. Concerns exist regarding its $2500/€2,490 MSRP, with some owners questioning its value and noting the potential for QC issues or a "jittery" seconds hand attributed to the new movement. The bracelet's articulation and stamped clasp draw criticism, though some owners report it improves with wear. Overall, owners and reviewers appreciate the Yema Superman Slim CMM.20's vintage styling and unique micro-rotor movement, but its value proposition and some finishing details are points of contention.

At a glance

21 of 29 specs differ
Diameter
MASTER COLLECTION CHRONO MOONPHASE40mm
Superman Slim CMM.2039mm
Power Reserve
MASTER COLLECTION CHRONO MOONPHASE66h
Superman Slim CMM.2040h
Water Resistance
MASTER COLLECTION CHRONO MOONPHASE30m
Superman Slim CMM.20300m
MSRP
MASTER COLLECTION CHRONO MOONPHASE$4,400
Superman Slim CMM.20$2,372

Full specifications

Case

9 specs
Category
Chronograph
Diver
Diameter
40mm
39mm
Thickness
14.2mm
9.95mm
Lug-to-Lug
49.5mm
Lug Width
21mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
30m
300m
Caseback
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Brown
Black
Indices
Applied

Movement

6 specs
Caliber
L687.5
Yema CMM.20
Beat Rate
0 vph
28,800 vph
Power Reserve
66h
40h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$4,400
$2,372
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