47 / 68 tag heuer carrera calibre 1887 b y p u s hin g yo u to t h e limi t a n d b re a k in g all b o u n d a r ie s, f o r m ul a 1 is m o re t h a n ju s t a p hy si c al c h alle n g e; i t is a te s t of m e ntal s t re n g t h. l ike tag h e u e r, yo u h a ve to s t r i ve to b e t h e b e s t a n d n e ve r c r a c k u n d e r p re s s u re. optik