The Longines Master Collection Chronograph L2.773.4.78.6 is a distinguished timepiece featuring a 42mm stainless steel case with a silver dial adorned with blue hands and Arabic numeral hour markers. It houses the automatic L678 movement, offering a 48-hour power reserve. This watch showcases multiple complications, including a chronograph, complete calendar with day, date, month, and moonphase indicators. Water-resistant up to 3 bar, it comes with a stainless steel bracelet equipped with a triple safety folding clasp and push-piece opening mechanism.