Aro Max Pro SHDescription This floor standing metal aroma diffuser is a high end aroma device designed for large spaces. With its sturdy and durable metal material and unique design, it creates a long lasting, rich and comfortable fragrance environment for users. 1. Built in high quality, long life compressed air pump Adopting new diffusion structure, the fragrance is evenly distributed and long lasting 2. Noise reduction technology design, quiet and undisturbed