R100 BLACK MATTE / CUFF BLACKA leather cuff to which is integrated a very geometric metal piece. On this piece attaches and detaches the R40 pocket watch. The concept of the R100 modular watch is simple in use, and powerful in its stance, between watchmaking and fashion, between past and future. Automatic skeletonized movement, 40h power reserve Mineral glass, anti reflective treatment Case 40mm stainless steel, matte black PVD Metal dial, matt black PVD Steel hands, black PVD