Ultrasonic Technology: Essential Oil Diffuser creates fine mist by ultrasonic misting technology, which can be enriched with aroma by adding essential oils. Ideal for soothing your mood, relieving stress, helping you sleep. Safe & Eco-Friendly Guarantee: Adopts BPA-free material that will not release any harmful odor, offer you a pleasant and healthy life. Waterless auto shut-off Ensure your safety. All-Day Lasting: 400ml water capacity, provides up to 8 hours of continuous operation without refilling effort. High mist and low mist option for different situations. Increase humidity of dry air, purify and cover unpleasant odors from pets or smoke for a relaxing and body-friendly home or workplace. Smart & Convenient: 7 soothing LED colors for your choice. You can easily press the button to choose a timer setting as you wish (1 hour / 3 hours / 6 hours / steady). Perfect for Gifts: Featuring unique wooden pattern, exquisite packaging box, give away a measuring cup, are perfect for