18k Yellow Gold Case, Black Rubber Strap, Cerachrom Black Bezel, Black Dial with Diamond Hour Markers and Luminescent (Yellow Gold) Hands, Tachymeter Scale on Outer Rim - Analog Display, Three Sub-Dials: 12-Hour, 30-Minute, and 60-Second Chronograph Functions, Rolex Calibre 4130 Automatic Movement with 44 Jewels, Winding Frequency at 28800 vph, Approx. 72 Hour Power Reserve, Scratch Resistant Sapphire Crystal, Screw-Down Crown, Screw-Down Case Back, Round Shape, 40mm Size, Folding Clasp Secure Closure, Water Resistance to 100 Meters (Approx. 330 Feet), Swiss Made Label, Chronometer Accuracy.
