500ml Large Capacity This ultrasonic essential oil diffuser has a large, easy-to-clean 500ml water tank.this is great for large rooms and working time can up to 14 hours.This humidifier will automatically shut off when water runs out. Use it to improve your home's air and atmosphere quality. Ultrasonic Scented Oil DiffuserThis aromatherapy essential oil diffuser is an amazing multifunction aromatherapy device . It is very easy to use, just fill with water and add a few drops of your favorite essential oil. Fill the space it was with a lovely fragrance that can lift your mood and relieve stress from Stressful and tired day. Multi-Aromatherapy DevicerMultiple fog timer modes,Continuous Mist,intermittent Mist(10 seconds on/10 seconds off), 2H timer,4H timer.7 Color Changing lamps for your choice. You can press the Light button to adjust the 7 LED lights (steady on/changing color). Each of them is adjustable between bright and dim modes, and could be set steady on. Waterless Auto Shout-OffOur essential oil diffuser is designed with waterless auto-off function,it will automatically shut off when it runs out of water or overheating with the built-in protection system.No worry about damaging the device itself or causing danger to users. An ideal way to add moist, comfortable air to small bedrooms, hotel rooms, tabletops and even workplace cubicles. The Best Gift ChoiceThe humidifier presents finer and more gentle mist. Perfect for bedroom, study, office, living room, bathroom, yoga, SPA, conference room, baby room, etc. It is good choice to use this lovely diffuser as Christmas gifts to your friends and families.