Product features: continuous spray / intermittent spray / night warm light The essential oils are dispersed through the siphon principle, so that the essential oils evaporate more thoroughly How to use it: 1. Open the top cover counterclockwise 2. add water. 3. Connect USB Power Supply 4. click on the switch and turn on the spray mode. Material:Silicone + aluminum alloy colour:Gray Blue / Orange Red / Light Green Package Contents: 1 * Aroma Diffuser 1 * USB cable Only the above package content, other products are not included. Note: Light shooting 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.