Breitling Premier B15 Duograph 42 Watch - 18K Red Gold - Black Dial - Black Alligator Leather Strap - Folding Buckle - RB1510251B1P1 Regatta interchangeable full and sapphire-crystal back

interchangeable full and sapphire-crystal back

screw-down back and push buttons

Aquanaut fold-over buckle

4 mm by 16

chocolate diagonal motif dial

Breitling Premier B15 Duograph 42 Watch - 18K Red Gold - Black Dial - Black Alligator Leather Strap - Folding Buckle - RB1510251B1P1 Regatta interchangeable full and sapphire-crystal back42. 0 mm 18K red gold case, 15. 3 mm thick, transparent sapphire crystal back, non screw locked crown with two gaskets, fixed bezel, black dial, Breitling B15 (Manufacture) mechanical hand wound movement, approximately approx. 70 hrs of power reserve, black alligator leather strap, folding buckle. Water resistant to 100 m (330 ft).