The Breitling Chronomat B01 42 AB0134101G1A1 is a self-winding mechanical watch featuring a 42 mm stainless steel case and a silver dial. It includes a chronograph function with 1/4th second, 30-minute, and 12-hour totalizers, and a date aperture. The watch is powered by the Breitling Caliber 01 movement, offering a power reserve of approximately 70 hours. It has a unidirectional, ratcheted bezel, a screw-locked crown with two gaskets, and a cambered sapphire crystal glareproofed on both sides. Water-resistant up to 200 meters, it comes with a stainless steel "Rouleaux" bracelet. Reference number: AB0134101G1A1.