The Bronze Field Guide

Yema Skin Diver Slim Bronze CMM.20

The Yema Skin Diver Slim Bronze CMM.20 is a current-production diver watch with a bronze (grade not stated by maker) case. It measures 39.0 mm across, 10 mm thick, 47 mm lug to lug, and is water resistant to 300 m. Inside is the CMM.20 (Calibre Manufacture Morteau 20) in-house micro-rotor automatic movement, with 70 hours power reserve. Complications: Time only. Priced from $2,449 (approx, converted from EUR 2,249). Brand origin: France.

Bronze diver watchesSkin-safe backDiversDisplay back
Reference
Type
Diver
Price
$2,449 · approx, converted from EUR 2,249
Case diameter
39.0 mm
Thickness
10 mm
Lug-to-lug
47 mm
Water resistance
300 m
Weight
Origin
France
Movement
In-house micro-rotor automatic
Caliber
CMM.20 (Calibre Manufacture Morteau 20)
Power reserve
70 hours
Complications
Time only
Ceramic
Bronze (grade not stated)
Colour
Hardness
Construction
Assembled
Surface treatment
Caseback
Sapphire (display)
Nickel-free
Not verified (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
FKM Viton rubber strap with bronze pin buckle
Ceramic bracelet
Crystal
Double-domed sapphire, unidirectional sapphire dive bezel
Display back
Yes
Dial
Dark grey (limited edition) or green
Lume
Super-LumiNova (lime)
Availability
Offered
Status
Current (2026 limited edition, maker product page pending)
Medium confidence Verified Jul 2026 Source: Monochrome / Time+Tide Maker / listing ↗
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Frequently asked questions

What bronze alloy is the Yema Skin Diver Slim Bronze CMM.20?

The Yema Skin Diver Slim Bronze CMM.20 has a bronze (grade not stated by maker) case with a sapphire (display) caseback. It is recorded at medium confidence pending a maker-stated alloy.

What size is the Yema Skin Diver Slim Bronze CMM.20?

It is 39.0 mm in diameter, 10 mm thick, 47 mm lug to lug, and water resistant to 300 m.

How much does the Yema Skin Diver Slim Bronze CMM.20 cost, and is it available?

It is current-production and lists from $2,449.

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