Model: Rado Diastar Diastar Chronograph Alarm Black Rado Diastar Diastar Chronograph Alarm watch, with Swiss analog/digital quartz movement, caliber ETA 251.265, 23 jewels, scratch-resistant tungsten carbide bezel, sapphire crystal with gold accents, and leather strap. Movement: Caliber ETA 251.265, 23 jewels, Swiss analog/digital quartz. Functions: 12 hours, 60 minutes, 60 seconds, 1/10 second, split function, chronograph. Alarm. Analog/digital display. Case: Highly polished, made of solid 316L stainless steel. Bezel: Made of scratch-resistant tungsten carbide, with a reflective finish. Crown: Engraved/embossed factory logo. Crystal: Sapphire. Flat design. Dial: Black. Polished gold-tone indices. Hands: Gold-tone. Filled with luminous coating. Caseback: Solid stainless steel. Engraved/embossed factory logo. Snap-on (press-in) design. Strap: Black. Genuine leather. Clasp: Butterfly clasp (hidden opening), center opening, with spring bar. Engraved/embossed factory logo. Water Resistance: 30 meters / 99 feet / 3 ATM. Case Size: 41.00 mm. 10.00 mm.