Innoo Tech Essential Oil Diffuser, New Version Cool Mist Aroma Humidifier with Adjustable Mist Mode Waterless Auto Shut-Off & 7 Color LED Lights Changing for Home & Office New fan technology - the fan has been designed to run very quietly At around 35db More mist & larger range - up to 15 square meters Whisper-quiet ultrasonic operation - humidify your living space to prevent dry, stuffy air Nightlight & auto shut-off - the 7 color LEDs the auto shut-off function gives you peace of mind