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opal and rock crystal
Expertly combining calfskin leather and rubber for maximum versatility
8 cts) and 56 brown diamonds (≈0
Lock necklace in
Ultra-chron Classic Case Size_40 mm - 44 mm opal and rock crystalIn 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