Large capacity ultrasonic essential oil diffuser and humidifier with a 350 mL tank. The fine mist supports aromatherapy while creating decorative 3D flame or volcanic lighting effects for atmosphere. Dual color adjustable lighting: switch between warm yellow flame and blue flame to suit mood or room lighting. Add 2-3 drops of your favorite essential oil to relieve fatigue, moisturize the skin, and foster a relaxing environment. Two spray methods for flexible humidification: jellyfish spray provides rapid moisture in minutes, while flame spray disperses oil more evenly. Quiet operation at about 25 dB ensures minimal disruption for work, study, or sleep. LED display shows power level at a glance, and USB charging offers easy, portable power. Use scenarios: - Bedroom night relaxation with gentle light and quiet mist. - Office or study desk to improve comfort during long work or study sessions. - Living room or spa area to create a calming ambiance with optional essential oils.