Breitling Premier B15 Duograph 42

The Breitling Premier B15 Duograph 42, reference AB1510171C1P1, has a 42 mm steel case. The case measures 15.35 mm thick, with a lug width of 22 mm. A cambered sapphire crystal, glareproofed on both sides, sits over the blue dial. Inside is the manual-winding calibre B15, a chronometer-certified movement with a power reserve of about 70 hours. As a chronograph, this piece adds the double chronograph function alongside small seconds, and the sapphire caseback lets the mechanism show through. The blue dial pairs with a gold-brown alligator leather strap on a steel folding clasp. The screw-down caseback and case hold water resistance to 100 metres.