Hdfc visa credit card is very useful .
Now bank provide lifetime free service .we can use it in case of emergancy and bank offer 50 day interest free.
After that interest may be apply it is good use for service people bank provide auto debit facility from your account so it is good way to use it there are many people use it if you apply online it willbe free it is only for hdfc bank customer. if you have an account u can use it.