From the Manufacturer:
Enjoy the benefits of pure essential oils by placing a few drops on the absorbing pad. Safe for travel, performs without heat or water. Creates a fragrant and healthy environment with the touch of a button.
Powerful and silent fan projects a healthy fragrance with your choice of essential oils.
Compact and portable, the Aromafier operates with two AA batteries and a USB connection, allowing you to create a spa experience wherever you go.
4 Inches Length - 3.25 Inches Wide - 2.5 Inches Height
Please Watch This Video About the Aromafier