Ultrasonic Diffuser Humidifier?:Water molecules are decomposed into 0.1-5 micron diameter nanoscale cold fog, By high-frequency electronic oscillation generated by ultrasonic vibration equipment allowing the aroma to float in the air, Producing a lot of active oxygen anion. ?Flame Night Lights?Powerful LED lights glow at the bottom of the fog, creating a realistic flame effect. You can have it automatically change the color of the flame or set any flame color. ?Waterless Auto-Off Function?:Electric aromatherapy diffusers can last for 6-9 hours. Designed with a waterless auto-off function, This essential oil diffuser will turn off automatically. ?Silent Operation?:Quiet operation(?28dB), Soothing your mood, Relieving stress, and Promote Sleep, The essential oil diffuser operates extremely quietly. ?7 Colors Can Be Adjusted?Create a relaxing, warm, loving, fragrance environment. Parameter Size: 13.5*13.5*7.8 cm / 5.31*5.31*3.07inch Capacity: 130ml Spray volume: 15-20ml/h Use time: 6-9 hours Support: Aromatherapy Material: BPA-free, suitable for babies and adults List Diffuser*1 English instruction manual*1 Type-C cable*1 Instructions 1. Add water to the water tank, please be careful not to exceed the water level; 2. Connect the power supply, you can use a 5V1A adapter, power bank, or computer USB interface; 3. Long press to turn on the spray and flame color night light, short press to change to color night light mode, and short press again to set the night light to be fixed to the current color. 4. It is recommended to add essential oils. Please do not add perfume and cologne