The CHRONOMASTER Original Triple Calendar 03.3400.3610/39.C910 features a 38mm steel case with a blue calfskin strap, complemented by a sunburst slate-grey dial showcasing the day, date, month, and moonphase. It is equipped with the El Primero 3610 automatic high-frequency chronograph movement, offering a 1/10th of a second chronograph function and a power reserve of 60 hours.