The warranty covers material and manufacturing defects existing at the time of delivery until twenty-four months after the date of purchase. Watch out for warranties offered from unauthorized sites, as transactions with these sites are at the buyers risk. Warranties are only honored with a valid warranty certificate from an authorized dealer. We would like to draw your attention to the fact that a watch used daily is running 24 hours a day, 7 days a week non-stop. The frequency of the maintenance service depends on the type of watch, the climate and the care taken by the watch wearer.
The technical office develops a new hand-wound mechanical movement with a chronograph function, the 30CH. Longines launches its Conquest collection, the first step in a new product development strategy, integrating the concept of a line or family of models. The generous size of the rectangular movement houses a large barrel spring and enables the use of a wide sprung balance, oscillating at a frequency of 36, vibrations per hour, for even greater accuracy. This time-measuring device opens the way to new heights of accuracy.
This means Longines is able to provide a service that is greatly appreciated amongst admirers of the brand the world over and is available only to watch owners who have had their timepiece for a certain amount of time. To receive the information kept in the Longines archives concerning your watch by email, we ask that you provide us with the serial number numerical characters, from 5 to 8 digits that is engraved either on the back of the watch, on the inside of the case back, or on the movement itself. In the last two cases, you will have to open the watch or have it opened by a watchmaker. High-quality photographs of your watch dial, case back and, if possible, the inside of the case back and the movement are essential. Two additional services are also offered by the brand:
Watches were produced using the "etablissage" method, where individual tradesman working out of small studios or their homes would produce parts or sub-assemblies which were then assembled and sold under the auspices of a single brand. In the 's, Agassiz passed control of his company to his nephew, Ernest Francillon. Francillon wanted to modernize the production of watches and believed that bringing all the final assembly and finish operations together into one factory would be a more efficient method of production.