Hublot Big Bang Ferrari Speciale Grey Ceramic Limited Edition of 250 Watch-401.FX.1123.VR45 mm polished and satin finished grey ceramic case, satin finished grey ceramic bezel, black composite resin lower bezel with 6 H shaped titanium screws, sapphire crystal with anti reflective treatment, skeleton dial with satin finished black plated appliques and hands with white luminescent, red chronograph second and minute counter hands, HUB1241 UNICO manufacture self winding chronograph flyback movement with column wheel, approximately 72 hours