Side by side

Longines MASTER COLLECTION CHRONOGRAPHvsYema Skin Diver Slim CMM.20

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

MASTER COLLECTION CHRONOGRAPH
LonginesMASTER COLLECTION CHRONOGRAPH
MSRP $3,650
Skin Diver Slim CMM.20
YemaSkin Diver Slim CMM.20
MSRP $2,117

At a glance

21 of 29 specs differ
Diameter
MASTER COLLECTION CHRONOGRAPH40mm
Skin Diver Slim CMM.2047mm
Power Reserve
MASTER COLLECTION CHRONOGRAPH
Skin Diver Slim CMM.2040h
Water Resistance
MASTER COLLECTION CHRONOGRAPH30m
Skin Diver Slim CMM.20200m
MSRP
MASTER COLLECTION CHRONOGRAPH$3,650
Skin Diver Slim CMM.20$2,117

Full specifications

Case

9 specs
Category
Chronograph
Diver
Diameter
40mm
47mm
Thickness
14.2mm
10mm
Lug-to-Lug
49.5mm
47mm
Lug Width
21mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
30m
200m
Caseback
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Ivory
Steel
Indices
Applied

Movement

6 specs
Caliber
L688.5
Yema CMM.20
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
40h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$3,650
$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.

Longines MASTER COLLECTION CHRONOGRAPH

Owners widely praise the Longines MASTER COLLECTION CHRONOGRAPH for its excellent fit and finish and classically styled, vintage theme. The 40mm model's dial is described as mesmerizing and legible, balancing class and complexity. One owner highlights the column-wheel chronograph and crown-set moonphase as exceptional for its price point, which was noted around $1700 USD. Accuracy varies, with one owner reporting +8 seconds per day, while another found the case finishing somewhat homogenous. The watch features a triple date complication and has a water resistance of 3 bar. On balance, owners rate the Longines MASTER COLLECTION CHRONOGRAPH highly for its value and refined aesthetics, particularly the chronograph and moonphase complications.

From video reviewers

The watch's elegant design, featuring an anthracite dial with gold Roman numerals and complications like the moonphase and chronograph, is a shared strength. The brown leather strap is noted as a matter of personal preference.

Yema Skin Diver Slim CMM.20

Owners and reviewers widely praise the Yema Skin Diver Slim CMM.20 for its balanced 39mm case, vintage aesthetic, and unique champagne dial. The proprietary CMM.20 micro-rotor movement is a notable feature, though some owners report potential QC issues including erratic timegrapher readings and second-hand stutter. The lume is described as subdued, and while some find the "dragon scale" bracelet beautiful, others consider it generic. The price point is a hurdle for some, and the stamped clasp quality is considered subpar by one reviewer, with a gap noted by an owner. The lack of hacking seconds is flagged as a drawback at its price. Overall, owners and reviewers rate the Yema Skin Diver Slim CMM.20 highly for its vintage charm and balanced wearability.

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