Side by side

Longines MASTER COLLECTIONvsYema Superman Slim CMM.20

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

MASTER COLLECTION
LonginesMASTER COLLECTION
MSRP $2,650
Superman Slim CMM.20
YemaSuperman Slim CMM.20
MSRP $2,372

At a glance

20 of 29 specs differ
Diameter
MASTER COLLECTION29mm
Superman Slim CMM.2039mm
Power Reserve
MASTER COLLECTION72h
Superman Slim CMM.2040h
Water Resistance
MASTER COLLECTION30m
Superman Slim CMM.20300m
MSRP
MASTER COLLECTION$2,650
Superman Slim CMM.20$2,372

Full specifications

Case

9 specs
Category
Diver
Diameter
29mm
39mm
Thickness
9.64mm
9.95mm
Lug-to-Lug
49.6mm
Lug Width
21mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
30m
300m
Caseback
Solid

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Flat
AR Coating
Inner
Indices
Applied

Movement

6 specs
Caliber
L888.5
Yema CMM.20
Beat Rate
0 vph
28,800 vph
Power Reserve
72h
40h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$2,650
$2,372

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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.

Longines MASTER COLLECTION

Owners widely praise the Longines Master Collection for its excellent finishing, classic styling, and value proposition, with specific call-outs for beautiful dials, Breguet numerals, and complications like moon phases and annual calendars. Reviewers and owners alike highlight the attractive price point for a Swiss-made timepiece featuring these elements. Some owners note the bracelet lacks sufficient micro-adjustment for a perfect fit, and one reviewer found the case finishing somewhat homogenous. A specific chronograph variant's pushers were described as having a cheap feel, and its hour counter did not always reset to zero, while another variant's subdial obscured a numeral. Water resistance is noted as 30m for one model, considered light by a reviewer. Overall, owners rate the Longines Master Collection highly for its dial aesthetics and the value it offers in complications and finishing.

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.

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