Analog chronograph automatic with black dial, luminescent hands and markers, index hour markers, tachymeter function on the bezel. Features three sub-dials (60 second, 30 minute, 12 hours). Powered by Zenith Calibre El Primero 400 movement, an automatic mechanical chronograph with Perliné decoration containing 31 jewels and composed of 278 parts; beating at 36,000 vph (60,000 bph); approximate power reserve: 50 hours. Includes scratch resistant sapphire crystal, matte microblasted titanium case and bracelet, round shape measuring 37mm in diameter with thickness of 12.6mm, transparent screw-in caseback, folding clasp closure, fixed bezel also made from matte microblasted titanium. Water resistant up to 50 meters / 165 feet.