The Buddha of Enlightenment is the founder of Buddhism, also known as "The Awakened One". The Buddha while fasting under the Bodhi Tree attained Nirvana, or the ultimate form of divine knowledge.
In this statue the Buddha sits on the lotus. Lotuses are symbols of purity and 'spontaneous' generation and hence symbolize divine birth, 'the spirit of the best of men is spotless, like the new lotus in the [muddy] water which does not adhere to it', and the heart of the beings is like an unopened lotus: when the virtues of the Buddha develop therein the lotus blossoms. This is why the Buddha sits on a lotus in bloom.
Behind the head is a beautifully carved "Sun", depicting the a "HALO", is an image of light, usually associated with the head. In relation to holy and enlightened beings the light of a halo symbolises truth, wisdom and purity of heart. This light dispels the darkness (of ignorance).
A Gautama Buddha Idol alleviates suffering and brings purity to the soul by improving your karmic flow, which contributes to a better universe.