Main Features: -Colorful lights make aroma and color pleasant.  -Turn on the Automatic Bluetooth function and the phone link can be used.  -30dB operates quietly, atomizes and humidifies silently, and does not affect your sleep.  -Add a drop of essential oil while humidifying and the fragrance will overflow.  -Can not change the water around, interval out of fog, clean toilet smell.    Specification Type: A: Standard Version;  B: Bluetooth Version;  Color: Light Brown/ Dark Brown;  Material: PP;  Power Supply: USB;  Function: Aroma;  Noise: 30 dB;  Water ank Capacity: 400ml;  Applicable Area: 21-30m²;  Lack of Water and Power pProtection: Support;  Operation Mode: Mechanical Control;  Rated Voltage: DC 5V;  Power: 4W Standard Version/ 8W Bluetooth Version;  Dimension Package Weight: 0.49kg;    Package Contents 1 x Ultrasonic Humidifier,  1 x Manual