The Den-O Belt works by drawing in free energy from the surrounding area, allowing it to generate the Den-O suit, which consists of a soft but durable material called Aura Skin (オーラスキン Ōra Sukin) and tough armor called Aura Armor (オーラアーマー Ōra Āmā). As the name implies, Aura Skin and Armor are attuned to the wearer's individual aura; because of Ryotaro's weak will, he can only generate the basic Plat Form. However, possession by Imagin causes the Aura Skin and Armor to reconfigure themselves into a form that matches the Imagin's will, as well as generating a facemask called a Denkamen (電仮面 Denkamen, lit. "Electro-Mask").