The Kirikane (截金 or 切金) technique has been used for this statue. This tehcnique is a traditional Japanese decorative technique used for Buddhist statues. It uses gold leaf, silver leaf, or platinum leaf cut into lines, diamonds, and triangles, resulting in a both delicate and splendid appearance of the Buddhist statue.
This Buddha statue has small celestial beings in the aura. These beings are flying around the Buddha statue and celerating the Buddha. This type of aura is called hiten (飛天) and is typical amongst Buddhist sculptures.