| ||For an overview of various models of power armor in the Fallout series of games, see power armor.|
|The following is based on Fallout Shelter or Fallout Shelter Online and some details might contradict canon.|
The X-01 Mk IV is the fourth generation of the highly advanced X-01 power armor boosting wearer's Strength by 4, their Perception by 1 and their Endurance by 1.
|X-01 Mk I power armor||+3 Strength, +1 Perception and +1 Endurance||500||legendary|
|X-01 Mk IV power armor||+4 Strength, +1 Perception and +1 Endurance||500||legendary|
|X-01 Mk VI power armor||+5 Strength, +1 Perception and +1 Endurance||500||legendary|
X-01 Mk IV power armor (1)