This Victorinox Airboss Mach 6 Watch has a 45mm black PVD coated Stainless Steel Casing with a See-Through Caseback & anti-reflective Sapphire Crystal lens enclosing a black + silver dial which features silver luminescent hands & numerals as well as a date function. The Victorinox Airboss Mach 6 has a Tachymeter scale as well as an impressive Swiss-made Valjoux 7753 Mechanical Self-Winding chronograph movement. It is mounted on a genuine black leather strap, which is fastened with a push button deployment clasp, & comes complete with its very own Victorinox Presentation Box. Victorinox Swiss Army Watches, your Companion for Life.