From the early years of Royal Oak Offshore production, this solid steel 42mm ROOS has the distinctive first series case with the cool industrial cut-out for the strap that hugs the wrist much more snugly than the later models. This 25570ST model also sports the original "all blue" dial (with under crystal date magnifier) that oozes vintage cool. In superb, crisp condition, complete with the original (and now very collectable) 'Port-hole box' and booklet this mighty Offshore is fitted to a black AP calfskin strap with folding clasp and covered by our 2 year warranty.