This authentic Brand New Longines watch features an automatic mechanical movement powered by the Calibre L619 engine, offering a 42-hour power reserve. The round stainless steel case measures 39mm in diameter and is 8.5mm thick; it comes equipped with a matching stainless steel bracelet featuring a folding clasp mechanism and fixed bezel. A silver-tone dial displays black or white hour markers depending on the model number provided (L4.910.4.12.6), along with hands showing hours, minutes, seconds, and the date displayed at 3 o'clock. The watch is protected by a sapphire crystal glass which also provides scratch resistance and has an alternative reference number L49104126. Equipped for water resistance up to 30 meters (approximately 100 feet), this timepiece includes standard functions such as hour, minute, second, date display, power reserve indication, and comes with a 2-year WatchMaxx warranty.