The Longines Master Collection L2.257.5.77.7 is a women's automatic watch featuring a 29mm stainless steel case with an 18 karat yellow gold cap. It houses the Longines Caliber L592 movement, offering a 45-hour power reserve. The silver 'barleycorn' dial is adorned with diamond hour markers and includes a date display at 3 o'clock. The watch is water-resistant up to 30 meters and is protected by a scratch-resistant sapphire crystal. The bracelet combines stainless steel and 18 karat yellow gold cap, secured with a triple safety folding clasp and push-piece opening mechanism. Reference number: L2.257.5.77.7.