Thorn Thorn TitaniumvsYema Skin Diver CMM.20

Thorn Titanium
ThornThorn Titanium

Ref. thorn-pt5000-automatic-39mm-titanium-watch-shy036·MSRP $185

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Thorn Thorn Titanium at true scale

Thorn Titanium

Yema Skin Diver CMM.20 at true scale

Skin Diver CMM.20

Diameter

39mm

39.5mm

Lug-to-Lug

44.4mm

lowest

47mm

Thickness

12.1mm

11.5mm

lowest

Water Resistance

200m

200m

MSRP

$185

lowest

$2,372

Movement

PT5000

Yema CMM.20

Case

4 specs
Diameter
39mm
39.5mm
Thickness
12.1mm
11.5mm
Lug-to-Lug
44.4mm
47mm
Material
Titanium
316L Stainless Steel

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
n/a
Black

Movement

1 specs
Caliber
PT5000
Yema CMM.20

Pricing

1 specs
MSRP
$185
$2,372
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Reviews

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

Thorn Titanium

Owners widely praise the Cronos Thorn PT5000 Automatic 39mm Titanium Watch SHY036 for its value, with one owner calling it the best modern explorer homage under $170. The tool-free bracelet adjustment links are considered a game-changer, and the 39mm titanium case is noted as unobtrusive and keeping the watch under 11mm thick. The PT5000 movement's accuracy is a point of varied owner experience, ranging from exceptional timekeeping comparable to quartz, to running 2.8 seconds fast per day, or gaining 2.5 minutes over two weeks. Some owners express skepticism or disappointment with the PT5000 movement, with one finding it noisy and finicky, and another preferring Seiko alternatives. Overall, owners rate the Cronos Thorn PT5000 Automatic 39mm Titanium Watch SHY036 highly for its excellent value and practical bracelet features, despite mixed experiences with the PT5000 movement's accuracy.

Yema Skin Diver CMM.20

The Yema Skin Diver CMM.20 is lauded for its vintage aesthetic, 39.5mm case size, and well-proportioned handset with sharp indices. Owners praise its textured cream dial, French tool watch elegance, and the smooth winding feel of the in-house CMM.20 micro-rotor movement. The fully brushed bracelet with toolless micro-adjust clasp is considered Yema's best yet. Accuracy readings range from -3/+7 seconds per day to approximately 0 to -10 seconds per day. Some reviewers noted questionable finishing on a prototype's hour hand and a rattly, stamped clasp. The watch's pricing has been questioned by some due to brand QC reputation, and its extended lug-to-lug may challenge smaller wrists. On balance, owners and reviewers appreciate the Yema Skin Diver CMM.20 for its vintage styling and improved bracelet design at its price point.

From video reviewers

The sapphire bezel insert and in-house CMM.20 movement are noted strengths. Reviewers questioned the value proposition compared to other Yema models.