Yema Skin Diver Slim Returns In Bronze With The CMM.20 Movement
Yema expands its Skin Diver Slim collection with the Skin Diver Slim Bronze CMM.20, a model that introduces a bronze case to the series while preserving the compact proportions and technical characteristics that define the Slim line. Following earlier stainless steel editions, this release is available in both limited and non-limited configurations.

Case and Bezel
The watch is built around a 39 mm bronze case with brushed surfaces and polished bevels. Thanks to the ultra-thin construction enabled by the In-house movement, total case thickness is kept to just 10 mm, while the lug-to-lug measurement reaches 47 mm, ensuring a balanced and wearable profile. The use of bronze adds a warm visual tone and allows the case to develop a natural patina over time.

Water resistance is rated at 300 metres, making the Skin Diver Slim Bronze suitable for professional diving use. A screw-down crown is positioned at 3 o’clock, and the watch is completed with a sapphire exhibition caseback, offering a view of the movement inside.
Framing the dial is a unidirectional sapphire bezel with a 0–60 dive scale. The bezel insert is finished in a faded “ghost” tone, referencing the appearance of aged bezels found on vintage dive watches. A luminescent marker at 12 o’clock ensures orientation in low-light or underwater conditions.
Dial and Legibility
The enamel dark grey dial features a glossy finish and follows the classic Skin Diver layout. Large triangular hour markers dominate the display, while Arabic numerals appear at 3-6-9-12 positions. All markers are outlined in bronze-coloured detailing and filled with Super-LumiNova in a light green tone, enhancing legibility while reinforcing the watch’s retro-inspired aesthetic.

Time is indicated by a pencil-style hour hand, a broad arrow minute hand, and a lollipop seconds hand. This combination prioritises clarity, particularly for the minute hand, which is critical for dive timing.
Movement: Calibre Manufacture Morteau 20 (CMM.20)
Powering the Skin Diver Slim Bronze CMM.20 is Yema’s Calibre Manufacture Morteau 20, a proprietary automatic movement developed in France in collaboration with Swiss watchmaker Olivier Mory. The calibre measures just 3.70 mm in thickness and uses a bi-directional tungsten micro-rotor, allowing the watch to maintain its slim profile. It delivers a power reserve of approximately 70 hours, operates at a frequency of 28,800 vibrations per hour, and is regulated to a chronometer-level accuracy of –3 to +7 seconds per day.

Strap, Availability, and Price
The watch is supplied on a black FKM Viton rubber strap, secured by a bronze pin buckle designed to age consistently with the case. This version of the Skin Diver Slim Bronze CMM.20 is produced as a limited edition of 200 pieces and is priced at € 2,249.

Alongside this model, Yema also offers a non-limited green-dial version of the Skin Diver Slim Bronze CMM.20. This alternative features white bezel numerals and white luminous material on the dial, while retaining the same case dimensions, movement specifications, strap material, and pricing.
Read more here.
General Specifications:
Brand: Yema
Model: Skin Diver Slim Bronze CMM.20
Dial: Grey, green
Lume: Super LumiNova
Case Material: Bronze
Case Dimensions: 39 mm Diameter, 10 mm thickness (excl. crystal), 47 mm lug-to-lug
Crystal: Sapphire glass
Case Back: Sapphire glass
Water Resistance: 300 Meters
Strap: FKM Viton rubber strap with a bronze pin buckle
Calibre: CMM.20
Dimensions: 3.70 mm Thickness
Functions: Hours, minutes, seconds
Winding: Automatic
Frequency: 4 Hz (28,800 Vph)
Jewels: 33
Power Reserve: 70 hours
Price: € 2,249
Availability: Now
Limited Edition: Yes, 200 numbered pieces (grey dial)










































