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There has never been a more reasonably priced dive watch with this premium feature.


 Many once-dormant watch brands have come back to life in the last few years; the majority were either eliminated or placed on life support during the 1970s and 1980s Quartz Crisis. Some of these firms choose the easy way out, just putting store-bought movements into replicas of styles from fifty or sixty years ago. Instead of just utilising their name and stealing their bravery, some firms really embrace the trailblazing mentality of their forebears and work tirelessly to improve the items they release.

What is the movement of a micro-rotor?

The oscillating weight, or rotor, is positioned in the centre of the movement's back and makes up around half of the movement's diameter in a conventional automated movement. When you rotate your wrist while wearing the watch, the rotor spins and winds the movement. That's what gives an automatic watch its automatic quality. The disadvantage of this arrangement is that the thickness of the watch is increased by the rotor attached to the rear of the movement.

The CMM.20 Yema Superman Slim

To begin with, micro rotor motions are uncommon. Diving watches with micro rotor movements are much unusual. And a micro-rotor dive watch at a reasonable price? That's pretty much unheard of. However, Yema has created precisely that with its most recent iteration of their flagship Superman diver. The Superman Slim CMM.20 is powered, of course, by its micro-rotor movement of the same name. 


This movement allows the watch to be 300m water resistant and measure a sleek 11.95mm thin, including the 2mm-thick domed sapphire crystal. In contrast, the thickness of Yema's ordinary Superman 500 diver is 13.4mm. Another remarkable accomplishment for such a slender diver is the Superman Slim's ability to show off its movement via a sapphire caseback.

Yema modified the Superman format for this small edition in addition to adding a micro-rotor movement. In addition to a sleek enamel lacquered dial and a completely revised case, the distinctive "Scales" bracelet has been trimmed 0.4mm to better complement the case's reduced thickness. I adore when a watch release demonstrates the kind of deliberate attention to detail like that.

The price is the finest part, now. Except for those looking to purchase a vintage Universal Genève Polerouter, Yema is essentially the only company offering micro-rotor dive watches. There aren't many competitors in this market, at least not ones that fall into Yema's pricing range. 

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