Breitling Chronomat B01 42 Stainless Steel - Red Gold / Grey / Rouleaux Ref. UB0158101B1U1

The Breitling Chronomat B01 Chronograph 42 UB0158101B1U1 is the two-tone bracelet version within the 2026 Chronomat B01 42 range. It combines a stainless steel and 18k red-gold case construction with an anthracite dial, black chronograph counters, and a matching two-tone Rouleaux bracelet. The 42mm case measures 13.77mm thick, reflecting the slimmer proportions introduced with the 2026 redesign. The case is water resistant to 200 meters and fitted with a cambered sapphire crystal with anti-reflective treatment on both sides. Its unidirectional ratcheted bezel combines stainless steel and 18k red gold, with raised rider tabs, numerals, and minute indexes. For the 2026 Chronomat B01 42, the chronograph bezel was revised into a single-piece construction that integrates the bezel ring, insert, rider tabs, and screws. The screw-locked crown is executed in 18k red gold and uses two gaskets. The anthracite dial distinguishes this two-tone execution from the steel, red-gold, and platinum-bezel variants in the same B01 42 family. It is arranged with black chronograph counters, applied hour markers, central hands, and Super-LumiNova on the hands and indexes. The display includes central hours and minutes, small seconds, central chronograph seconds, 30-minute and 12-hour counters, and a date aperture. The previous 1/100 scale has been removed from the rehaut. Inside the watch is Caliber B01, a COSC-certified self-winding manufacture chronograph movement with a column wheel and vertical clutch. It runs at 28,800 vibrations per hour and uses 47 jewels. This reference is fitted to a stainless steel and 18k red-gold Rouleaux bracelet with a concealed butterfly clasp and Breitling’s patented micro-adjustment system.