Breitling Premier B01 Chronograph 42 2

42mm case
316L stainless‑steel case
Dome‑shaped double anti‑glare sapphire crystal
Transparent sapphire case‑back
Modified 7750‑B01 automatic chronograph movement
Frequency:28800 vph
Fixed smooth bezel, twin sub‑dials, streamlined rectangular pushers, raised Arabic numerals
Non‑screw‑in crown with double gaskets
Folding clasp