The Breitling Chronomat B01 42 AB01343A1L1A1 is a stainless steel watch featuring a 42mm case and a green dial. It is powered by the in-house Breitling Calibre 01, a self-winding mechanical movement with a power reserve of approximately 70 hours. The watch includes a chronograph function with 1/4th second, 30-minute, and 12-hour totalizers. The case is 15.1mm thick and has a water resistance of 200 meters. The bracelet is made of stainless steel and features a folding clasp. The watch is equipped with a cambered sapphire crystal that is glareproofed on both sides. The dial has luminous silver-tone hands and index hour markers. The bezel is unidirectional and ratcheted. The lug width is 22mm. The movement operates at a frequency of 28,800 vibrations per hour and contains 47 jewels. The watch includes functions such as chronograph and date. Additional features include a screw-locked crown with two gaskets and a transparent case back.