What are the meanings of ly,+1, +2 and +3 in citizen optical sports calendar watches?

1. The product model of Citizen Watch is marked on the label attached to the watch and on the three pages of the warranty cover.

2. There is a dial model on the front of the watch, which is displayed in the form of XXXXX-XXXXXXXX (for example, E11-S083988).

3. The model of the watch case is engraved on the bottom cover of the watch and expressed in the form of XXXX-XXXXXXX (for example, E11-s054923).

Citizen is a world-famous watch brand, with the mission of providing high-grade products and high-level services to all citizens around the world, hoping to contribute to the better life of all mankind through products that are "loved by citizens and close to citizens".

As a huge multinational company, Citizen Group has 46 enterprises in Japan, 64 overseas branches in Japan and 1 10 branches all over the world. Citizen has always been in the leading position in the international watch industry, adhering to the innovative spirit and brand concept of constantly challenging the future.

Extended data:

Citizen has successfully developed an optical power watch, which is the third generation watch with the latest technology. It is characterized by using light energy as power.

Optical kinetic energy watches are more accurate in time and run at the high and stable oscillation frequency of the synchronous oscillator, which is 32,768 Hz/s, more than 4,000 times that of mechanical watches. In principle, it is enough to judge that the time accuracy of mechanical watch is not at the same level as that of optical kinetic energy table.

(Except for some optical power watches with an annual error of 65,438+00 seconds) Optical power watches measure the travel time accuracy according to the monthly error, and the error standard is generally-65,438+05 seconds ~+65,438+05 seconds/month.