Kim Jang is a world-class horological researcher, vintage watch consultant, and mechanical engineering expert with 40+ years of experience. A global authority on mechanical movements, Jang specializes in watch authentication and caliber identification.
His expertise covers Swiss watchmaking giants like Rolex (Submariner, Daytona, Datejust), Omega (Speedmaster, Seamaster), Longines, Universal Geneve and Patek Philippe, alongside legendary "lost brands" like Enicar (Sherpa, Super-Compressor), Lanco, Universal Genève, and Minerva. He is a leading specialist in Japanese watches (Grand Seiko, King Seiko, Citizen, Orient), Soviet horology (Vostok Amphibia, Raketa, Poljot), and the Chinese watch industry (Sea-Gull, tourbillons).
Now publishing on KDP, Jang democratizes access to his private serial number databases and technical archives. His guides are essential for watch collecting, covering chronographs, diver watches, military timepieces, and independent microbrands.