{"product_id":"l2-836-4-52-2","title":"Ultra‑chron","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.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eCase\u003c\/b\u003e\u003cbr\u003eShape: Cushion\u003cbr\u003eMaterial: Stainless steel and sapphire\u003cbr\u003eGlass: Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides\u003cbr\u003eCase Back: Screw-down case back\u003cbr\u003eDimension: Ø 43.00 mm\u003cbr\u003eLug distance: 22 mm\u003cbr\u003eLug-to-lug: 49.00 mm\u003cbr\u003eThickness: 13.90 mm\u003cbr\u003eWater Resistance: Water-resistant to 30 bar\u003cbr\u003eCase Specificities: Screw-in crown, Unidirectional rotating bezel\u003cbr\u003eWeight: 108.1 g\u003cbr\u003e\u003cbr\u003e\u003cb\u003eDial \u0026amp; Hands\u003c\/b\u003e\u003cbr\u003eDial color: Black\u003cbr\u003eHour markers: Applied indexes\u003cbr\u003eHands: Silvered polished hands\u003cbr\u003eSpecificities: Swiss Super-LumiNova®\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMovement \u0026amp; Functions\u003c\/b\u003e\u003cbr\u003eMovement Type: Automatic\u003cbr\u003eFunctions: Hours, minutes, seconds\u003cbr\u003eCaliber: L836\u003cbr\u003eMovement Description: Self winding mechanical movement beating at 36'000 vibrations per hour, with a monocrystalline silicon balance-spring power reserve up to 52 hours\u003cbr\u003e\u003cbr\u003e\u003cb\u003eStrap\u003c\/b\u003e\u003cbr\u003eMaterial: Leather strap\u003cbr\u003eColor: Brown\u003cbr\u003eBuckle: With buckle\u003cbr\u003e\u003cbr\u003e\u003cb\u003eGeneral\u003c\/b\u003e\u003cbr\u003eMagnetic resistant: Yes\u003cbr\u003eChronometer Officially Certified: Yes\u003cbr\u003e\u003cbr\u003e\u003cb\u003eReference\u003c\/b\u003e\u003cbr\u003eL2.836.4.52.2","brand":"Longines","offers":[{"title":"Default Title","offer_id":51666696044922,"sku":"L2.836.4.52.2","price":3450.0,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/1158\/7928\/files\/nJA2nV6ydAxO23774R1P_2F0_2F1ff422689ead5de4b348fb202ee452d0_c4dc18f5-2c90-47ea-8d18-8eb2aa34c621.png?v=1781015780","url":"https:\/\/www.michaud.ch\/en\/products\/l2-836-4-52-2","provider":"Michaud SA","version":"1.0","type":"link"}