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Introduction

Hey watch enthusiasts! If you love dive watches, you’ve probably heard of Yema’s legendary Superman line. Today, we’re diving into the Yema Superman Slim CMM.20, a watch that blends classic charm with modern upgrades. Let’s explore why this watch should be on your radar.

The Legacy of the Yema Superman Dive Watch Line

The Yema Superman line has a rich history dating back to its debut in 1963. Designed as a professional dive watch, it quickly became known for its unique bezel-lock mechanism and robust build. The bezel-lock mechanism was a game-changer, preventing accidental movements and ensuring divers could track their time underwater accurately.

Yema has always been at the forefront of innovation. Over the decades, the Superman series has seen numerous updates. The design has evolved, but Yema has always stayed true to the core features that made the original Superman a hit. The incorporation of modern materials and technology has kept the Superman line relevant while honoring its heritage. The Superman Slim CMM.20 continues this tradition, offering a perfect blend of vintage style and contemporary performance.

Impressive Design and Build Quality

Slim and Stylish 39mm Dive Watch Case

The Yema Superman Slim CMM.20 sports a sleek 39mm stainless steel case that's both sturdy and stylish. Its slim profile, just 9.95mm thick (excluding the crystal), makes it incredibly comfortable for everyday wear. The brushed finish on the case, combined with polished bevels, gives it a refined look that works for any occasion. This case design not only looks great but also ensures a snug and comfortable fit, especially for those with wrists just over 7 inches like myself.

Striking Dial Options: Deep Blue and Classic Black

You have two dial options: a deep blue or a classic black enamel lacquer. Both versions have the “MANUFACTURE FRANÇAISE” inscription at 6 o'clock, proudly showcasing Yema's commitment to local craftsmanship. The double-domed 2.00mm sapphire crystal not only protects the dial but also adds a vintage touch that enhances the watch’s overall appeal. The lacquered enamel dials, especially the black one, offer a fantastic glossy deep look, giving the watch a premium feel. The Super-LumiNova C1 Grade A used for the markers and hands ensures excellent legibility in low-light conditions.

Functional Sapphire Bezel and Screw-Down Crown

The unidirectional rotating bezel, made from sapphire, features a luminescent marker at 12 o'clock for excellent visibility in low-light conditions. The bezel lock mechanism ensures that the bezel can only be operated when the crown is unscrewed, preventing accidental movements—a feature that professional divers will undoubtedly appreciate! The screw-down crown, embossed with the Yema logo, ensures the watch is water-resistant up to 300 meters, making it perfect for diving adventures or just a lazy day by the pool.

The CMM.20 Micro-Rotor Movement: A Dive Watch Innovation

The heart of the Yema Superman Slim CMM.20 is the in-house Caliber Manufacture Morteau 20 (CMM.20) movement. This ultra-thin micro-rotor movement, developed in collaboration with Olivier Mory, measures just 3.70mm thick. It operates at a frequency of 28,800 vibrations per hour and offers an impressive 70-hour power reserve, ensuring precision with an accuracy of -3/+7 seconds per day. The movement's design, featuring a blackened galvanic finish, is visible through the sapphire case back, showcasing Yema’s dedication to both functionality and aesthetics. It really is quite an attractive movement to look at and really stands out with that blackened finish.

Comprehensive Features and Specifications

• Case Material: 316L stainless steel with polished bevels

• Dimensions: 39mm diameter, 9.95mm thickness (excluding crystal), 48mm lug-to-lug

• Crystal: 2.00mm double-domed sapphire

• Dial: Lacquered enamel with Super-LumiNova treated hands

• Bezel: Unidirectional rotating with sapphire insert and luminescent marker

• Crown: Screw-down with embossed Yema logo

• Water Resistance: 300 meters (30 BAR)

• Bracelet: Stainless steel with brushed finish, double security folding clasp with dive extension

How the Yema Superman Slim CMM.20 Stands Out Among Competitors

When you stack up the Yema Superman Slim CMM.20 against other dive watches, its unique features really shine. Let's take a look at a couple of key competitors:

• Seiko Prospex Diver SPB301: This watch is known for its durability and robust build, thanks to the 6R35 movement. However, the Yema's in-house micro-rotor movement is slimmer and offers a more unique engineering marvel. The Seiko's movement has a lower beat rate and shorter power reserve compared to the Yema's CMM.20, making the Yema a more refined and technically advanced choice.

• Tudor Black Bay 54: The Tudor is slightly more expensive and comes in at 37mm. While it does offer an in-house movement, the Yema’s CMM.20 stands out with its slim design and impressive 70-hour power reserve. The Tudor's movement is robust but doesn't match the slimness and elegance of the micro-rotor in the Yema. The Yema also offers a unique bezel-lock mechanism, which adds an extra layer of functionality and safety for divers.

Pricing and Value

At $2,490 for the steel bracelet version, the Yema Superman Slim CMM.20 offers fantastic value. You’re getting an in-house micro-rotor movement, high-quality materials, and exceptional craftsmanship at a competitive price. The watch also comes in a slightly less expensive version with a leather strap, priced at $1,990, making it accessible to an even wider range of buyers.

Areas for Improvement

While the Yema Superman Slim CMM.20 is impressive, there are a few areas that could be improved. Some users have reported minor issues with the bezel lock mechanism being a bit tricky to operate. This wasn’t something I personally found to be an issue though. Additionally, the bracelet's stiffness in the first few links can affect its fit on the wrist. However, the use of drilled lugs is a great feature for easy strap changes, adding to its versatility. Over time, the bracelet may loosen up and provide a better fit, much like breaking in a new pair of shoes.

Join the Conversation

What are your thoughts on the Yema Superman Slim CMM.20? Have you had any experiences with this model or other watches in the Superman line? Share your experiences and thoughts in the comments below!

Final Thoughts

The Yema Superman Slim CMM.20 combines sleek design, advanced movement, and versatile appeal. Whether you’re a seasoned collector or looking for a reliable daily wearer, this watch is a fantastic addition to any collection. Its blend of classic and modern elements makes it a standout piece that you’ll love wearing every day.

If you're fascinated by the Yema Superman Slim CMM.20 and want to delve deeper into the brand's rich history and innovative technology, be sure to check out my comprehensive article on Yema watches. Learn about the brand's French heritage, iconic designs, and cutting-edge advancements that make Yema a standout in the world of horology. Read more here in my article:

Dive Into Yema Watches: French Heritage and Cutting-Edge Technology

To check out the full range of watches, head over to Yema.com