Tell your name.
Just tell about your latest qualification
For example, if your highest qualification is Masters in Business Administration, then you should say
“I have done M.B.A in Marketing (or your specific stream)
(You don’t have to narrate the whole Bio-Data, since that you would have already given as a hard-copy)
It is important to tell about those specific hobbies which actually match the job you are applying for. Yes, it is important.
For example, if you are applying for the job of SALES, then your preferred hobby should be
“Conversing with people”
You need to mention that you are extrovert and communicating with people is the best time pass