fan diffuser 'kō'
fan diffuser 'kō'
fan diffuser 'kō'
fan diffuser 'kō'
fan diffuser 'kō'
fan diffuser 'kō'
fan diffuser 'kō'
fan diffuser 'kō'
fan diffuser 'kō'

fan diffuser 'kō'

Regular price $36.00 $0.00 Unit price per
Shipping calculated at checkout.

Easy to use, silent, fan-operated diffuser, works great in small spaces (about 5 feet radius) such as by the bedside, on a coffee table, or desk.

It operates with 2 AAA batteries or *USB cable. *Included

The name of the diffuser 'kō' (香) means 'scent' in Japanese and this is a perfect kit for anyone who wants to enjoy the subtlety of 100% pure natural essential oils without diluting or heating.

How to use

Remove the top cover and add 3 - 5 drops of 100% pure natural @aroma essential oil to the pad. Switch the diffuser on and enjoy the scent!



Replacing oil pad

Once oil pad has become stiff / discolored, or when changing scent to a different essential oil, we recommend replacing the oil pad.

- Set of 6 replacement pads (sold separately)

Product specifications


Diffuser (oil pad attached), USB cable (3.2ft/1m), Replacement oil pad x 1 

Power supply

USB cable (DC 5V) or AAA battery x 2 (Alkaline or rechargeable / sold separately)


φ2.6 x H2.6 in / φ65 x H65 mm


0.2 lbs / 94g (Excluding batteries, USB cable)

Diffusion method


Required oil

@aroma's 100% pure natural essential oil

Diffusion capacity*

Approx. 10 square meters / 100 square feet

Auto-off function

Turns off in 20 minutes when using batteries

*Varies depending on the environment and essential oil

The design and specifications are subject to change without notice for product improvement.

For additional information, please see the FAQ page.

Customer Reviews
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United States United States

Takes Me Back to Kyoto

I stayed at the Hotel Kanra Kyoto and in the suite was a air freshener system that worked perfectly. Small but delivered powerful scent without having a water chamber. I enjoyed the fragrance so much that when I went home to the USA, I immediately searched online for the same unit and scents. I'm happy to have found At-Roma. My system works perfectly (just like my stay in Kyoto) and the scents are lovely and packs a punch in a few drops.

Kelly A.
United States United States

Quiet and easy!

An excellent, quite quiet, small diffuser. I use it at my work desk and it’s easy to change the scent every day with a few new drops.


Effective, small, and SOOO quiet I had to put it up to my ear to make sure it was actually running. Love it more than my water diffuser. Only negative is the cost of the replacement pads. Don�ft know yet how often I�fll need to change them tho. They remind me of thick carpet padding. Thought I might be able to sub some cotton squares but nope. Overall I recommend. May actually buy another.