Hublot Spirit of Big Bang Chronograph Blue 642.NL.7170.RX. 42 mm titanium case, blue ceramic bezel. Blue dial features 30-minute counter at 3 o’clock, date aperture between 4 & 5 o’clock, 12-hour counter at 6 o’clock, seconds sub-dial at 9 o’clock. Swiss made, Automatic Caliber HUB4700, based on Zenith El Primero 400, 31 jewels, 63 parts. Power reserve of 50 hours. Blue and black rubber strap with folding buckle.