Electric Aromatherapy 100ml Essential Oil Diffuser Cool Mist Humidifier for Spa Sleep Relaxation 5 in 1 FUNCTIONS: Aromatherapy Essential Oil Diffuser,Humidifier,Air Purifier, Ionizer,LED Mood Light. It is perfectly suitable for use at home, bedroom, working, study, office, living room, bathroom, baby room,yoga room, SPA shop, fitness room , foot hall, conference room , hospital, hotel,lounge or any other private / public circumstance. THERAPEUTIC LIGHT:It comes with compacted into the product giving you the relaxing feeling when its switched on.This cycles automatically through a spectrum of colours and you do have an option to switch this off while the mist is on. QUIET ULTRASONIC OPERATION:Advanced Ultrasonic Diffusing Technology. Noise Level is less than 25 db.It is almost silent in use and in normal day to night use nobody is likely to notice the very slight noise of the fan. Do not disturb your sleep study or work. SIMPLE TO USE AND SAVES ENERGY: just add water, a few drops of whatever oil you want, switch on and instantly the room fills with gentle perfume.The fact that this uses LED lights means you'll save a little big of money on the energy bill since they're energy efficient! STABILITY AND SAFETY: The base of the diffuser has non-slip feet which prevent it from sliding on smooth surfaces.It also has a safety shut off system where if you do leave it for a while unattended it will shut off when the water decreases to a certain level.