what is the main features of indian constiyution?

There are so many features of Indian Constitution some are as follows:
1) A WRITTEN CONSTITUTION:It contains about 395 Articles & 9 schedules,Fundamental rights,Directive principles ETC.

2)PREAMBLE:The Preamble is an introduction.It resolves constitute India into a "Sovereign,Socialist,Secular,& Democratic Republic"


3)MORE FLEXIBILITY


4)FUNDAMENTAL RIGHTS


5)DIRECTIVE PRINCIPLES OF THE STATE POLICY


6)INDEPENDENCE OF JUDICIARY


7)MODERN SETUP


8)PARLIAMENTAY Govt


9)SINGLE CITIZENSHIP


10)ADULT SUFFRAGE
etc...........