@BenMorbihan Salut, j’ai reporté exactement le même probleme, c’est très frustrant.
For english speakers: he is mentionning the issue I also reported of the watch randomly beeping and buzzing for no reason (nothing showing on screen), several times per day when the watch is not being used.
Its not :
background connection to HR belts or anything else (it happened no in vicinity of such tools)
GPS fix (it happened inside where no GPS can be found)
movment /overall activity related (it happened when static, when walking)
battery related (it happenend at various battery state)
time related (it happens at seemingly random time and date)