Brand: Omega Model: Speedmaster Broad Arrow 1957 Reference: 321.10.42.50.01.001 Movement: Automatic (Self-winding) Cal.3313 Case Size: 40mm x 48mm Dial: Black Wrist Size:(If a spare link is included, the size includes the spare link.) Up to 19.8cm (7.8 inch) Condition: Grade AB (Excellent) - Case/Bezel: Small dents and minor chips on bezel. - Crystal: Beautiful condition. - Accuracy: +6 sec/day. Note: (If there is information regarding overhaul and polishing, it will be stated. If there is no mention of overhaul or polishing, it has not been done. Please take this into consideration when purchasing.) Professionally polished and cleaned. Complete full set with original boxes, warranty card, and spare links. Excellent movement health with 317 amplitude and 0.3ms beat error.