about this project Whisper Mute & Timer: With ultrasonic technology, 20dB ultra-quiet and smooth mist make you sleep better. You can easily press the Mist button to choose the timer setting (1 hour/3 hours/6 hours/steady ) as you want. With a spray output of 50-70ml/hr and a capacity of 300ml, it is ideal for spaces of 20-30m2 and can run continuously on low power for up to 10 hours. [Negative Ion Air Purifier]: The built-in negative ion ceramic atomizer produces the same negative ions as nature, precipitates impurities, and allows you to breathe fresher air. The aroma diffuser emits mist at a 45 angle, effectively diffusing essential oils into the air, and humidifying more evenly. 7 Colorful LED Lights: The diffuser is an ideal night light, it can be set to bright, soft light or cycle through. 7 color changing lights (white/blue/green/red/purple/yellow/cyan) for your choice. Realize the perfect combination of light and fragrance, and create a relaxed rest environment. Powerful function makes it can be used as aroma diffuser/humidifier/air purifier/night light. Auto shut off without water: When there is no water, the oil diffuser will shut off automatically, which is safer, no need to worry about damaging the device itself or causing danger to users. Innovative non-slip base and superior coverage. [High quality]: Environmental protection PP, ABS material. The anti-corrosion inner water tank is specially designed for aromatherapy oils. Never clogs like other humidifiers and easy to clean.