This is an authentic Bvlgari Diagono Scuba Chronograph in black with stainless steel case and rubber strap. The watch features a striking black dial with chronograph subdials, luminous hour markers, and a polished bezel with tachymeter scale, offering both sophisticated styling and robust water resistance up to 200m. As an officially certified chronometer with automatic winding movement, this timepiece combines precision engineering with Bvlgari's signature sporty-luxury design.