Authentic Heuer by TAG Heuer perforated leather watch strap with FC5042 deployant clasp.
Ca. 19 mm at the lugs ends, short piece is ca. 85 mm, long piece is ca. 105 mm.
The strap is marked GENUINE LEATHER | TAG Heuer.
The clasp is marked HEUER | STAINLESS STEEL | F A6 | FC 5042.