There are 3 ways to pass objects to a fragment

They are:

1. Passing the object through a setter is the fastest way, but state will not be restored automatically.
2. setArguments with Serializable objects is the slowest way (but okay for small objects, I think) and you have automatic state restoration.
3. Passing as Parcelable is a fast way (prefer it over 2nd one if you have collection of elements to pass), and you have automatic state restoration.

http://developer.android.com/reference/android/os/Parcelable.html