?Adjustable Mist Mode ?There are two mist mode, adding water to max line, the oil diffuser run 10-15 hours in high mist mode and 15-20 hours in low mist mode. ?Premium Quality & 24 Hours Online Support?Using the same eco-friendly PP material with baby’s bottle, and has a strict quality control to make sure the premium quality of the diffuser. Offer a 24 Hours mail support, and enjoy a risk free shopping on URPOWER. ?5-IN-1 Aromatherapy Device?It’s a aroma diffuser when using with essential oils, a humidifier in dry winter or air conditioned room with a large and easy to clean 1000ml water tank, multiple mist nebulizer modes, as well as a safety auto-switch that prevents it from overheating in case it runs out of water. ?Large Capacity & Optional Time Settings?Large 1000ml water capacity that can continue use up to 20 hours each time. When time is up or there is no water, it will turn off automatically. Press the "Mist" button, choose the time from ON, 3h, 6h or 9h.