The round announcement in German is not always correct: Whenever the number of seconds is in single digits (e.g. 6:04), the clock says "Sechs Uhr vier" (~ six o'clock four) instead of "sechs null vier" (six zerofour).
Otherwise (e.g. 6:37) the announcement is correct: "sechs siebenundreißig" (~six thirty-seven).
This issue has also been present in the last firmware versions.
