Compact nebulizer made by OMRON, with power adapter. No instruction manual included. Functionality confirmed. Produces plenty of vapor. It's quiet, so I used to secretly administer it to my daughter while she was sleeping. It was convenient for travel. It cost around 10,000 yen. The ultrasonic component that produces the vapor is a consumable part, so its performance gradually declines over time. The mask that goes over the mouth is missing because I threw it away. Small parts can be purchased individually on Amazon, etc. - Brand: OMRON - Model Name: MICRO AIR NEBULIZER - Included Items: Power adapter - Color: White - Size: Compact Thank you for looking.