Kessel 7 Melodies Chrono Sport Watch

Symbol of black market in Czech Republic in 80s. Illegaly imported by (later arrested) "enterpreneur" Miroslav Provod. Functionally different and superior over later low-quality chinese clones Levis, Montana or U.S.A., with light-oversensitive die (that's the reason for that magic black sticky tape on the top of resin-covered chip).
Differences:
- while holding date, set switches between 12/24 format (chinese do nothing)
- while holding date, alarm cycles between DD/MM and MM/DD format (chinese switch melody on/off)
- while holding alarm, date cycles between AL,ALBEEP, BEEP and NONE (chinese switch melody on/off)
- while holding alarm, set switches between 12/24 format (chinese switch BEEP option on/off)
- setup is entered by holding the button, (chinese by pressing it twice w/o using stopwatch mode)

12/24 mode is chosen on chinese models using setup, DD/MM mode is fixed as MM/DD.

Also, on the display, there's no silly "DATE" sign, but ".)))" BEEP symbol.
And one funny thing more - the main chip has sound output as well, when there's no melody second chop, it just beeps, instead of playing 1-channel music (mixing frequency derived from 32768kHz xtal, it's phase accumulator).

Display has weird and inefficient multiplexing scheme - not as ingenious as those 1-button 11+2 pin displays.

Видео Kessel 7 Melodies Chrono Sport Watch канала xcimbal