The advanced power armor Mk II, also called simply Enclave power armor, is a model of power armor used exclusively by the Enclave military forces, developed after the Great War to rival that of the Brotherhood of Steel. It is composed entirely of lightweight composites rather than the usual combination of metal and composite plates. Its design is substantially different from the earlier model using the same designation, but using a different helmet, and lighter materials.
The set consists of two pieces, the body armor and helmet. Like all power armor, Power Armor Training is required to equip it. It provides +1 Strength and -1 Agility; one less Strength bonus and Agility penalty than the T-45d power armor. There is also a 5% increase to radiation resistance. Enclave power armor is also slightly more durable than standard power armor, and its condition degrades around the same as normal power armor.
Dialogue of the Brotherhood of Steelscribes suggests that the Enclave's power armor is significantly more advanced than the Brotherhood's, with Brotherhood paladins expressing concern that their standard bullets may not even be able to penetrate it. They also refer to it as "black devil" power armor.
In actual gameplay, Enclave power armor is only slightly better than Brotherhood power armor in terms of damage resistance, though it can take slightly more damage overall before breaking.