{"product_id":"l2-537-4-72-2-ultra-chron-classic-l2-537-4-72-2","title":"L2.537.4.72.2 Ultra-Chron Classic","description":"\u003cp\u003eLongines L2.537.4.72.2 Ultra-Chron Classic, ULTRA-CHRON CLASSIC, L2.537.4.72.2, automatic watch, Ø 37.00 mm, stainless steel., Date, self winding mechanical movement beating at 36000 vibrations per hour, with a monocrystalline silicon balance-spring power reserve up to 52 hours., Water-resistant to 5 bar, scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides., Sunray silver dial., Alligator strap bracelet, with buckle., ULTRA‑CHRON, In 1968, LONGINES launched the Ultra-Chron Diver, the first dive watch equipped with a high-frequency movement. At the time, LONGINES had already established itself as a pioneer in high-frequency technology. As early as 1910, the winged hourglass brand created the first high-frequency timekeeping device capable of measuring 1\/10th of a second. In 1959, LONGINES developed the first high-beat movement for a wristwatch, an observatory chronometer that set new records in terms of accuracy. The new Ultra-Chron is inspired by the aesthetic codes and professional diving features of the 1968 model. These chronometer-certified watches are powered by an exclusive LONGINES calibre equipped with a silicon balance-spring and resistant to magnetic fields.\u003c\/p\u003e","brand":"LONGINES","offers":[{"title":"Default Title","offer_id":62154128195954,"sku":"L2.537.4.72.2","price":3900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/9175\/2050\/files\/5240599617_23527d86-0b87-4d13-91c8-6726304283a6.jpg?v=1785999796","url":"https:\/\/aliciasjewelers.com\/products\/l2-537-4-72-2-ultra-chron-classic-l2-537-4-72-2","provider":"aliciasjewelers","version":"1.0","type":"link"}