The Longines Symphonette L2.306.4.57.0 is an oval-shaped ladies' wristwatch introduced in 2015. It features a stainless steel case measuring 21.90 mm in width and 34.00 mm in height, paired with a black dial adorned with diamond hour markers. The watch is powered by the Longines Calibre L176 quartz movement, offering hours, minutes, and small seconds functions. It is equipped with a scratch-resistant sapphire crystal and is water-resistant up to 30 meters. The timepiece is completed with a black leather strap and a tang-type steel buckle.