Junghans watch erhard junghans aerious chronoscope 028479501 this junghans erhard junghans aerious chronoscope watch collection was inspired by the company founder himself as someone who was a pioneer enthusiast and innovator of german watchmaking each piece within this collection epitomises his accomplishments and brings to life his extraordinary and worldwide adoration by combining a sporty design with german technical prowess junghans have created a truly extraordinary chronoscope