4 DIFFUSION SETTINGS: This diffuser can run continuously or users can choose from 3 intermittent diffusion settings that allow you to choose how long you'd like to diffuse. When plugged in, this diffuser will last up to 4-5 hours in continuous mode or 8-10 hours in intermittent mode. USB CHARGER: This sleek diffuser comes equipped with a USB cable for convenient charging. With the easy USB charging option and 50 mL reservoir, you can slip this diffuser into your cupholder, plug it into USB power, and enjoy your favorite essential oils on-the-go. AUTOMATIC SHUT OFF: When utilizing different timer and diffusion settings, enjoy peace of mind knowing that your Portable Diffuser will automatically shut off when the timer is complete or the water has run out. THE HIGHEST QUALITY: At Plant Therapy, our goal is to positively impact the lives of as many people as we possibly can, by selling such a high-quality product at an affordable price. Be confident knowing you are purchasing quality oils and body care at direct-to-consumer prices. CERTIFIED AROMATHERAPISTS ON STAFF: Our customers are our #1 priority and we’d love for you to join the Plant Therapy Family. Our Certified Aromatherapists are happy to help you with all of your questions. In addition, we offer a risk-free 100% satisfaction guarantee!