In the 1960s, the horological landscape witnessed a remarkable leap in technology with the introduction of watches boasting a frequency of 36,000 beats per hour. This advancement marked a significant departure from the prevailing standards of 18,000 vibrations per hour, captivating both consumers and the watchmaking industry with its promise of heightened precision and aesthetic allure.
At the forefront of this horological revolution stood Girard-Perregaux, a pioneer in the field, unveiling the Gyromatic in 1966. Renowned as the first "hi-beat" timepiece to surpass official chronometer standards, the Gyromatic featured a balance designed to oscillate at an unprecedented frequency of 36,000 beats per hour, setting a new benchmark for accuracy and performance.
Despite its groundbreaking achievements, the Gyromatic necessitated certain compromises, including a shorter power reserve and more frequent maintenance intervals. Building upon Girard-Perregaux's success, Longines introduced the Ultra-Chron in 1967, addressing these challenges with innovative solutions such as special lubricants to reduce friction. The result was a movement of exceptional accuracy, boasting precision within a minute per month.
Both the Longines Ultra-Chron and Girard-Perregaux Gyromatic stand as iconic symbols of the golden age of watchmaking. Though relatively rare, these timepieces hold immense historical and technological significance, complemented by a timeless design that continues to captivate modern collectors.
Among the notable exemplars from this era is the Longines Reference 7970-5, a dive watch housing the hi-beat Caliber 461 movement. Encased in vibrant bakelite, this watch seamlessly marries technological precision with the ruggedness essential for dive watches, making it a coveted treasure sought after by collectors worldwide.
This exquisite Ultrachron 7970 is presented in immaculate condition, untouched and unworn, accompanied by a luxurious black alligator leather strap adorned with white stitching, elegantly branded with the Longines insignia, and secured by an original tang buckle.
Completing its ensemble is the full set of original Longines packaging, including the distinguished box and warranty card, ensuring the authenticity and prestige of this exceptional timepiece.
