Dignified clothing.
Ultra Orthodox men tend to wear conservative suits (black' blue) on Shabbat. Much as a business man would dress when going into his office.
Orthodox Jewish men pray and sing to God.
There is no special belt for Jewish men. But some Jewish men wear "tseetsteet katan", which is an undershirt that has fringes at the bottom.
Orthodox Jewish men sometimes do wear long robes.
Shabbat shalom is a Jewish greeting which we say during the day of Shabbat. See also:More about the Jewish Shabbat
They wear nice clothes which they have specifically designated for shabbat.
Shabbat is NOT anything living. It's the Jewish day of rest.
It is a small hat that Males wear, the singular is 'kippah' andit is pronounced ( KEY-pah). 'Kippot' is the plural. Religiously observant Jewish men always wear a kippah while other Jewish men, and sometimes Jewish women, wear them while praying.
Shabbat
Because for 3300 years the Jews have kept the Torah-tradition of Shabbat-observance.
Anyone can sing Shabbat blessings for a child.
Men wear suits and ties, and women wear dresses or slacks.