In 1967, Longines launches the Ultra-Chron, with a self-winding 11″ line caliber aiming to offer an alternative to the electronics and quartz used by the competition. The regulating organ of the L430 movement is a guarantee of accuracy, with the characteristics of a competition piece as it vibrates at a frequency of 36,000 vibrations per hour.
The Longines Ultra-Chron Cal.431 Hi-Beat movement lives in that most rarified atmosphere of some of the highest performing watches ever made. For Longines to release this watch and movement in 1967, bill it as the world’s most accurate watch, and guarantee it to be accurate to within a minute a month, was an extraordinary claim for a series produced mechanical wristwatch It resulted in offering one of the best quality movement Longines has ever produced
The condition is excellent, the case, the dial, hands and indexes, the 431 movement are all original and in mint condition.
It keeps great time and runs smoothly.
On the pictures my wrist is 6,8 Inches or 17,5cm wide (mid size), the watch has a great presence on the wrist as you can see.
The watch comes alone, no box and papers thank you.
Worldwide delivery in a secure package with insurance.
Please note that deliveries in the EU are free of Custom duties.
If you are outside the European Union, please make sure of the custom duties that apply to you before purchase.
No return accepted, If you have any questions before purchase, feel free to ask.