Transparent blue sapphire crystal case, transparent blue rubber strap with fold over clasp and push button release. Fixed transparent blue sapphire crystal bezel. Transparent composite resin skeleton dial featuring luminous silver-tone hands and alternating Arabic numeral/index hour markers, minute markers around outer rim; analog dial type. Luminescent hours, minutes, seconds indicators. Date display located at the 3 o'clock position. Chronograph functions include two sub-dials: one for 60-second and another for 60-minute measurement. Powered by Hublot Calibre HUB1242 automatic movement based on HUB1240; equipped with 38 jewels, composed of 330 parts, operates at a frequency of 28800 vph, offers approximately 72 hours power reserve. Scratch resistant sapphire crystal display window. Screw down crown. Transparent case back. Round case shape measures 45 mm in diameter. Water resistant to 100 meters / 330 feet depth. Includes functions: chronograph, column wheel mechanism, flyback capability, date, hour hand, minute hand, second hand. Belongs to the Big Bang Unico series. Luxury watch style; Swiss Made label.