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The ULTRA-CHRON collection adopts carbon: an innovative material that is both strong and light, and now being used for the first time in a Longines watch case. Powered by a Longines’ exclusive high-frequency movement, beating at 36 000 vibrations per hour, this model draws inspiration from an iconic 1968 watch with a distinctive cushion-shaped case. Combining innovation and precision, each ULTRA-CHRON CARBON offers a unique design and is fully chronometer-certified by TIMELAB.