I am hereby offering a vintage Karex Digital Jump Hour German mechanical men's wristwatch from the 1970s. Please have a look at the watch and its specifications before placing a bid. Vintage Karex Digital Jump Hour German mechanical men's wristwatch from the 1970s. Dial: original Crystal: original (a few small signs of wear) Crown: original Diameter: 3.9 cm Lug: 2.3 cm Strap: black leather strap, slightly used, 18 cm Documentation: no documentation Condition: in a very good condition. The watch has signs of wear on the case and crystal. The watch is fully functional. Rare German watch from the 1970s. It has a Ruhla UMF 24-34 movement. Shipping: will be sent by registered and insured post.