This is a men's Seiko Chronograph 4T57-00B0 wrist watch. It has a stainless back and black face. The band is a black Seiko Calf leather band that measures about 7.75" long. (The case adds about 1.75" in addition to the 7.75".) The watch is currently running and keeping time! I don't have the box or tags for this, but other than the band being a bit worn, the case and crystal have no scratches or wear that I see. :)