Breitling Exospace B55 Night Mission Bluetooth Chronograph Watch - 46mm Black Titanium Case - Volcano Black Dial - Blue Black Twinpro Strap - VB5510H21B1S146. 00 mm black titanium case, non screw locked crown with two gaskets and integrated push piece, unidirectional ratcheted bezel, sapphire crystal with glareproof treatment on both sides, Volcano black dial with blue hands, analog and LCD digital display, backlighting, EOL indicator, SuperQuartz Breitling B55 movement with with ability to pair with dedicated smartphone application via Bluetooth Low Energy for data transfer and remote setting, blue