This is a very uncommon vintage watch known as the OMEGA SPEEDSONIC f-300 with |lobster| OMEGA bracelet. This watch is very hard to find-especially complete with box, papers and original hang-tag! The case measures a massive 46x43x14mm. in stainless steel with incredibly cool full-length “lobster” style OMEGA bracelet that actually flexes like a lobster tail. This bracelet would cost a fortune to produce in this era. The f-300 OMEGA quartz chronograph movement was just serviced and working perfectly. The dial literally changes colour depending on the reflection of light-bluish to black to silver-very cool. Look at the massive, rectangular, round edge pushers-love them. The hinge on the original box has dislodged-but opens and closes fine and looks great. These watches were marketed to Europe (Italy) and South America and are rarely seen in North America. You are going to love this piece!