The EcoFlow WAVE 2 Portable Air Conditioner is no longer available on the official EcoFlow website. We recommend checking out the EcoFlow WAVE 3 or other promotional items. This unit offers the fastest cooling and heating, is installation-free and fits anywhere. It provides 8 hours of comfort with an add-on battery and operates at a quiet 44dB, perfect for sleep. It utilizes R290, a greener refrigerant, and can be charged in 4 ways.