7 hours run time. Color rotating. Up to 1,000 sq. ft. Bamboo Diffuser: Now Solutions ultrasonic real bamboo oil diffuser unites aromatherapy with modern scientific innovation to create an essential oil diffuser that's the perfect complement to your home or office. This attractive diffuser is BPA-free and utilizes high-frequency ultrasonic electrical vibrations to create an ultra-fine mist. This diffusion method doesn't utilizes heat, which maintains essential oil integrity and holistic properties. More about aromatherapy: Aromatherapy and essential oils have been used throughout the ages. Until the late 19th century, aromatherapy and the use of essential oils were considered a discipline of medicine. Incense, ointments and oils were all made from plants by holistic practitioners. Aromatherapy is one of our oldest, non-invasive health practices. Scents have an effect on our mind and body; they can evoke memories, stimulate feelings and arouse the senses. Certain essential oils have the ability to relax, stimulate, or create balance between the body and mind. An essential oil's aroma is picked up by the olfactory nerve located in the back of our nose and then carried to the brain where it can have an effect on the senses. Scents can stimulate an emotional response due to their direct impact on the limbic system, which processes our memories, emotions and feelings. At Now Solutions we take the quality and purity of our oils very seriously. For 30 years we've gone to great lengths to ensure that every oil we produce is brought to you in a manner that's both scientifically and environmentally responsible. Features: Extremely quiet. Easy to clean. Just add tap water and essential oils. Cool steam. No heat involved/no risk of burn. 2 timer settings: 1 hr / 2 hr. Runs up to 14 hrs intermitted / 7hrs continuous. Automatically shuts off. Great for home or office. Rin life 5000+ hours. Rotating LED lights. Specifications: Model: 7521; run time: up to 7 hours continuous; color: bamboo wood cover and base; water capacity: 150 ml (5 fl. oz.); misting models: on/intermitted/off; coverage: up to 1,000 sq. ft. light modes: color rotating/fixed/off; dimensions: 3.75 inches l x 3.75 inches w x 6 inches h. The diffuser has a 1-year manufacturer guarantee. 1 year warranty. nowfoods.com/essential-oils. Customer service 888-548-0040. BPA free. Product of China.