The Longines Master ref: L2.909.4.78.3 features a stainless steel case with a diameter of 40mm. This model, produced in 2019, is powered by the automatic winding Longines caliber L899.2. The watch displays a silver dial and includes a date function along with a moonphase complication. Its design combines practicality with elegance, making it a noteworthy addition to any collection.