1.This is a diffuser, no need for any cotton swabs, you can add non- oils to diffuse the . 2. make to use a 5V1A adapter for power supply, otherwise the circuit may be damaged. 3.Can add oils to soothe the body and mind to say goodbye to insomnia to the water tank drop 2-3 of oil comes to the surface, soothe the body and mind 4.Soft mist humidification simulation aromatherapy machine simulation |can add oils low noise|hydration spray 5.ultrasonic technology, that is, open and use Product name:5V humidification aromatherapy machine Product number:-XF06 Water tank capacity:300ML Spray volume:20-30ML / H or so Working voltage:DC5V Working current:1A Working power:5W Model Number:USB Humidifier Type:Quiet Air Humidifier Use:Moisturizing and hydrating Type:Humidifiers with Night Light Speed:4-Mist Modes Feature 1:Desktop USB Diffuser Feature 2:Household Humidifier Feature 3:Office Humidifier Application:Car/Outdoor Camping/Living Room Colour:Black Material:ABS + PP Package Contents: 1 * Humidifier Diffuser 1 * USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.