When he transforms, it reappears around his waist and is always the same color as his current form. A stone embedded in the belt, called Amadam (アマダ Amadamu), is the source of Kuuga's power and able to extend the lifespan of a person. Furthermore, the Amadam is present on Daguva, Gouram, and (in Kuuga's World in Decade) Gamio as well. Another Arcle, a prototype version, was also created, but it lacked the Amadam, which keeps the user from going berserk. Mika however, discovered it and wore it, becoming the second Kuuga in the novel.