Habring² Erwin “Sport” (Pre-Order)One of the latest releases to the Erwin line of watches is this Sport model with vertically brushed silver dial with vintage inspired lumed Arabic numerals and syringe hour and minute hands. The reverse side reveals Habring's patented Manufacture A11S caliber which beats at 4Hz and carries approximately 48 hours of power reserve. A tangential screw is in place for fine adjustment and the anti magnetic escapement is fit with a Carl Haas hairspring of