The Longines PrimaLuna L8.123.4.97.6, launched in 2026, is a distinguished model within the PrimaLuna series, known for its gently curved case and traditional dial layouts. This version is crafted from stainless steel and comes with a coordinating bracelet, featuring a secure triple safety folding clasp with a push-button release. The circular case is topped with a sapphire crystal that is both scratch-resistant and treated with anti-reflective coating on both sides. It offers water resistance up to 30 meters.

The luminous blue mother-of-pearl dial is adorned with diamond hour markers, which consist of 15 Top Wesselton VS-SI diamonds totaling 0.057 carats. Time is indicated by polished silver hands that track the hours, minutes, and seconds, alongside a date window that is seamlessly integrated into the design. At its heart lies the Longines calibre L592, an automatic mechanical movement that operates at 28,800 vibrations per hour. This movement features a monocrystalline silicon balance spring and holds approximately 45 hours of power reserve, facilitating the functions of hours, minutes, seconds, and date.