Passion for Motorsports and Pure Performance. With the introductionof the “1919 Chronotimer”, Porsche Design creates an aesthetic linkbetween architectural design, sporty elegance, and performance.CASE:diameter: 42 mm;height: 14.90 mm;material: Titanium;crown: screw-down;glass: convex, scratch-resistant, double-sided and 7-layer anti-reflective sapphire crystal;case back: screwed, black-tinted sapphire crystal opening;water-resistant: to 10 bar.DIAL:minute, hour,small second at 9 o’clock,chronograph second,30-minute counter at 12 o’clock,12-hour counter at 6 o’clock,date window at 4 o’clock,tachymeter scale on the bezel.SCLASP:Folding clasp.MOVEMENT:caliber: Sellita SW 500;rotor: Porsche Design Icon rotor;diameter: 30 mm;height: 7.90 mm;power reserve: 48 hours;frequency: 28,800 per hour [4 Hz];jewels: 25.