The CHRONOMASTER Original is crafted in a 38mm steel case in the same proportions as the A386, paired with a reimagined black tricolour dial and a steel bracelet. Water resistance of 5 atm. Powered by the El Primero 3600 automatic high-frequency chronograph movement with 1/10th of a second chronograph function and a power reserve of 60 hours. Stainless steel bracelet.