Cronus Prototype 3 PR-03GB Limited Edition 600m Diver Swiss Automatic 43mm 4/100


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We take trades against any of our watches!!! We also buy watch packages!!


The first manual sketches and technical drawings of the diving watch Cronus were developed in 2010 by the Russian deployment watch 191 CHS from the 1960s. The aim was to maintain the characteristics of the axial rotation of the crown as a central control element and to stabilize the crown closure as it protrudes quite far. The requirement was from the outset: a very robust watch, which can withstand extreme loads and external influences and ensures water tightness. This idea was implemented technically in 3D-construction. In the following year, the prototype 1 was finally developed.
The concept of the closure was consistently further developed and optimized after the test. The closure was fitted with a visual warning system (red securing ring). It is controlled axially by a spring and warns the user from unsecured conditions. In addition, a corresponding note has been added on the dial (control before dive). The innovative locking system was patented in 2013. One year later the prototype 1 was re-designed, the case got a new shape without losing its charm. As part of the development, the crown closure was further optimized and decoupled from the housing. As a result, the relief of the elevator crown has been achieved without sacrificing safety. The prototype 2 model is created. Further information can be found in the patent description.

The housing is made according to our technical drawings and 3D data in the clock production facility Glashütte and assembled in a strictly limited small series in a Munich watch workshop. Each prototype housing has a serial number. You get a completely handmade and original love piece “made in Germany”, built with love.

Registration of the trademark took place in 2015.


Really Nice CRONUS Prototype 3 Limited’s Edition with brushed stainless steel case! Such a well made watch! Limited Edition #04/100, Swiss Automatic & a 600m Diver! While it’s a new brand for me, I am very impressed and “All-In” for CRONUS! I will be a buyer for all models and particularly interested in the early prototypes – if you have one please let me know!



MODEL: Prototype 3 

MOVEMENT: Automatic – Swiss ETA 2824

CASE: Stainless Steel

CROWN: Screw Down Protected

SIZE: 43mm

LUGS: 22mm

DIAL: Black Dial

BEZEL: rotating Diver

CONDITION: Pre-owned – As-New with remaining factory warranty!

BOXES/PAPERS: – 100% Complete Set!


STRAP/BRACELET:  – 2 – Original CRONUS Honey brown leather strap with signed steel buckle & Additional Brand New CRONUS medium brown leather strap.

Let us know what you have in your collection!! I consider all watches in trade! Please upload pictures.

and include details of your trades through my Trade/Buy tab at the top of my homepage.