Probably in 1975 Bulgaria started producing LED watches. There is a discussion, weather Buletronic is a bulgarian reverse engineered project, or a licence of Elektronika, but branded Buletronic. Production is organized in Pravets ? hometown of communist leader Todor Zhivkov, where large-scale production of electronics (Pravets Computers) is planned to develop.Soon after the start of production, LED technology gives way to the LCD. The first LCD models of Buletronic use case and covers of the LED models. Later, new models with the traditional form of digital electronic watches appear.LCD-models use mechanisms produced in the Far East. It is believed that practically there is no difference between Buletronic and Sanyo from that time.Characteristic of LED watches from the 70s is that they are rarely branded. This makes the differentiation of the first models Buletronic from the other LED watches a hard job. However, comparing the known data, batteries, covers and cases, which repeats the branded LCD- models, we can try to make some basic classification.
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