{"product_id":"ultra-chron-classic-37mm","title":"ULTRA-CHRON CLASSIC 37mm","description":"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.","brand":"Longines","offers":[{"title":"Default Title","offer_id":52071699677458,"sku":"LON-L2.537.4.72.6","price":4000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/0411\/2658\/files\/9a0696264f45bf5e26ec613538869319.jpg?v=1772297143","url":"https:\/\/bartonclay.com\/products\/ultra-chron-classic-37mm","provider":"Barton-Clay Fine Jewelers","version":"1.0","type":"link"}