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 mind4.Soft mist humidification simulation aromatherapy machine simulation |can add oils low noise|hydration spray5.ultrasonic technology, that is, open and useProduct name:5V humidification aromatherapy machineProduct number:-XF06Water tank capacity:300MLSpray volume:20-30ML / H or soWorking voltage:DC5VWorking current:1AWorking power:5WModel Number:USB HumidifierType:Quiet Air HumidifierUse:Moisturizing and hydratingType:Humidifiers with Night LightSpeed:4-Mist ModesFeature 1:Desktop USB DiffuserFeature 2:Household HumidifierFeature 3:Office HumidifierApplication:Car/Outdoor Camping/Living Room Colour:BlackMaterial:ABS + PP Package Contents:1 * Humidifier Diffuser1 * USB CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.