Le Comptoir Aroma Mini Ouda DiffuserLe Comptoir Aroma Mini Ouda Diffuser uses ultrasonic waves to create a cool, dry, fragrant mist made of water and essential oils.Features:Water tank capacity: 150 mLDiffusion coverage: 300 sq. ft.Diffusion duration: 5 hours in continuous modeTimer: 1 hour – 3 hours7 multicoloured lights or selection of one colourDimensions: diameter 5 x height 4.5 inches