The Viva E Air Freshness System emits intensely-scented pure Fragrance continuously, creating a permanently fresh environment that has fresh impact every time you walk into the room. Viva E is Designed and Engineered to deliver consistent and continuous levels of Fragrance and odor control for the full life of each Refill. Oxygen Powered Technology is a clean source of power, producing continuous levels of intense Fragrance that contain no propellants, solvents or CFCs just pure natural scent.