1. Identify the model from the warranty card

The complete model number of the corresponding Longines watch will be displayed on the warranty card of the watch.

2. Identify the model number from the back cover of the mobile phone

The simplest and most direct way is that the Longines model number will be displayed on the back cover of the watch, but only part of it will be displayed. Please refer to the corresponding warranty card for the complete number.

3. Look at the numbers

The model number of the Swiss Roman watch is composed of 12 digits. Generally, there are 6 digits on the bottom cover of the watch, and the other 6 digits are on the warranty card and invoice. superior.

Extended information:

How to identify Swiss watches:

1. Check the winding efficiency of the watch: When a normal Swiss watch is wound, the hand It should feel gradually tightening. When it does not move, it means that the spring has been fully wound. If there is an abnormal "chuck, chuck" sound when winding, or the stem slips, it indicates that there is something wrong with the winding part.

2. Check the gap and mutual position of the hands: There should be a certain gap between the hands of the Swiss watch and the dial and cover, as well as between the hour, minute and second hands, and they cannot rub against each other. Otherwise, it will affect movement. Set the hour and minute hands to three o'clock, six o'clock, nine o'clock, twelve o'clock and other positions respectively.

3. Check the tightness of the Swiss watch when the minute hand rotates. Turn the minute hand and hour hand continuously for twelve hours. If there is no obvious feeling of looseness or tightness between the minute hand and the hour hand at each position of the twelve hours, it means that the hand part of the watch is installed normally.

Baidu Encyclopedia-Swiss Watch