Portable mini design diffuser with night light is very convenience to carry and use. Firstly, drop some essential oil onto the USB chip. Then insert the item into a device with a USB socket, such as a computer. It will work after insertion. You can use a variety of fragrant oil or liquid. Item Name: Aroma Diffuser Material: ABS Port: USB Features: Mini Size, Night Light, Air Fresher Size: 7cm x 2cm x 0.8cm/2.76" x 0.79" x 0.32" (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Aroma Diffuser(Random Color) 1 x Sucker