TouchButtonreturnSpeed Property

The speed at which the button will move back toward its original position measured in screens per second (based on the larger of width and height). [1.0 = Move 1 screen/sec]. This only has an effect if Follow Touch Position is True, or if Move To Touch Position is True and a Touch Region is set, and Return on Release and Animate on Return are both True.

public float returnSpeed { get; set; }