Founded in 1913 in La Chaux-de-Fonds by Ariste Racine, Enicar was an innovative brand that distinguished itself for its pioneering spirit and its tool watches. In the 1950s and 60s, it gained renown for its participation in expeditions to the Himalayas and for its cutting-edge technology. The name 'Ultrasonic' referred to a patented ultrasonic cleaning and lubrication process that extended maintenance intervals, ahead of its time. This model represents one of the most emblematic pieces from the company in the 1960s, standing out for its robust construction and the innovative Ultrasonic process. Valued by collectors for its reliability, understated elegance, and historical character. The watch underwent a complete overhaul by a professional watchmaker in August 2024, including disassembly, cleaning, lubrication, gestión adjustment and ultrasonic cleaning.