Cvstos Challenge Chrono. Reference: CVCRTNRGSVCvstos calibre 577 self-winding movement with 42-hour power reserve, 28,800 vibrations per hour.Rose gold 750 / 18-carat tonneau case measuring 41 x 53.7 mm. Black alligator leather strap, 750 / 18-carat pink gold double-fold folding clasp. Black and gray skeleton dial with 4 counters: date at 4:30 p.m., power reserve at 3 o'clock, small seconds at 9 o'clock. The screw-down crown and pushers are in grade 5 titanium, the oscillating weight is in palladium and titanium.Curved sapphire crystal with circular anti-reflective satin-finish treatment.Watch water-resistant to 100 m.Watch in very good condition.Watch guaranteed 2 years. Shipping: nationally 2-6 days. Continental and Global 1-2 weeks