The PR-550NF includes the following:

Size - 550ml water capacity 

Light - Your choice of NO Light /One Fixed Color /7 Colors Cycle

Timer - Continuous/1H/3H /6H

Mist Setting - High Mist (Approx: 10H continuous) and Low Mist (Approx:  25H continuous)

Unit will automatically shut off when water runs out.

Packaging Includes: 

1x Aroma Diffuser(No essential oil)

1x 12V Power Adapter

1x User Manual

1x Measuring Cup