Zenith - El Primero Stratos Flyback Striking 10th Black Alchron Watch 24.2061.4057/67.C707

45.5mm black alchron case, transparent sapphire glass back,black ceramic disc bezel , black dial with silver counters, automatic El Primero 4057B movement with hours and minutes, small second, date, flyback striking chronograph, approximately 50 hours of power reserve, black fabric strap with triple folding buckle. Water resistant to 10 ATM.