Professional watch, 46 mm,Movement : SuperQuartz, thermocompensated quartz electronic, analog and 12/24hr LCD digital display, backlighting (white light), battery state-of-charge indicator. Chronograph:1/100th second, max. 99 hrs 59 min. 59 sec,flyback function,electronic tachymeter, chronograph (lap timer, flight times) Calendar digital, perpetual, with weeks indication.Functions:countdown timer, 7 daily alarms, CountDown/CountUp Clock, (max. 99 days, 23 hrs 59 min. 59.99 sec.) with independent alarm, UTC worldtime; pairing possiblity (Bluetooth Low Energy) with a smartphone (dedicated Application) for data transfer and ?remote settings.Calibre Breitling B50.Titanium Case with Transparent sapphire crystal caseback. Bidirectional, ratcheted. Screw-locked, two gaskets.Sapphire crystal, glareproofed on both sides. Volcano Black Dial -Titanium, black rubber strap.