The Longines Master Collection L2.257.4.97.6 is a 29 mm stainless steel watch featuring a sunray blue dial adorned with diamond hour markers. Powered by the self-winding mechanical Calibre L592 movement, it operates at 28,800 vibrations per hour and offers a power reserve of approximately 45 hours. The watch includes a date display at the 3 o'clock position and is protected by a scratch-resistant sapphire crystal. It is water-resistant up to 3 bar (30 meters) and comes with a stainless steel bracelet equipped with a triple safety folding clasp and push-piece opening mechanism. Reference number: L2.257.4.97.6.