Case material: polycarbonate. Strap: polycarbonate. Clasp: hidden butterfly clasp. Bezel: black polycarbonate. Caseback: gun metal stainless steel, engraved. Dial: black. Hands and indexes: gun metal stainless steel with black luminal. Glass: mineral with anti-reflective coating. Movement: Seiko VJ21, quartz. Water resistance: 5ATM