Breitling Premier B21 Chronograph Tourbillon 42 Willy Breitling

Breitling's Premier B21 Chronograph Tourbillon 42 Willy Breitling, reference LB2120171C1P1, comes in a 42 mm platinum case. The case measures 15.25 mm thick, with a lug width of 22 mm. A cambered sapphire crystal, glareproofed on both sides, covers the blue dial. Inside is the self-winding Breitling B21 calibre, a manufacture movement from La Joux-Perret with 55 hours of power reserve. This chronograph combines a tourbillon with small seconds, and a sapphire display back shows off both mechanisms along with the oscillating weight. It is a limited edition, fitted with a black alligator leather strap on an 18k white gold folding clasp. The case carries a 100 metre water resistance rating.