BPA Free 5 Hours Run Time Color Rotating 400 Sq. Ft. Hand-Blown Glass Features Purple/Charcoal Swirls Glass Design Rotating LED Lights Just Add Room Temperature Tap Water and Essential Oil No Heat Involved/No Risk of Burns Cool Vapor Automatically Shuts Off BPA-Free Extremely Quiet Easy to Clean Great for Home or Office Run Life 5000 + Hours 1-Year Warranty Specifications Model 7487 Color Purple/Charcoal Swirls Glass Design/Faux Wood Wrap Base Misting Modes Continuous Light Modes Warm White/Color Rotating/Fixed/Off Run Time Up to 5 hours Water Capacity 60 ml/2.03 fl. oz. Coverage Up to 400 sq. ft. Power 5V USB Dimensions 4.5"l x 4.5" w x 6.75"h Ultrasonic Glass Swirl USB Oil Diffuser NOW Solutions Ultrasonic Glass Swirl USB Oil Diffuser unites scientific innovation with the timeless tradition of aromatherapy to create a BPA-free diffuser that uses only tap water and your favorite essential oils. Instead of heat, this contemporary diffuser utilizes high frequency ultrasonic electrical vibrations to create an ultra-fine mist, which helps to maintain essential oil integrity and holistic properties. With an automatic shut-off and an up to five hours of whisper-quiet operation, this attractive diffuser with rotating colors (see image below) complements your health lifestyle and is ideal for home and office. 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 disciplines of medicine. Incense, ointments and oils were all made from plants by holistic practitioners. Aromatherapy is one of your 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 stimulates an emotions 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 essential oils very seriously. We go to great lengths to ensure that every oil we produce is brought to you in a manner that's both scientifically and environmentally responsible.