audible, but not loud. unfortunately, the power output is rather low.

The diffuser is not audible.

Hello Karina_amapola. Thank you for your message. Sounds are very individual and are perceived differently from person to person, so it is difficult to make an exact statement here. However, Lucy is one of our quietest aroma diffusers and is therefore often used in the bedroom. You are also welcome to contact us directly by email at service@stadlerform.com or by phone on 041 720 48 48 so that we can look at this together. Kind regards from the Stadler Form team

The diffuser is barely audible and very quiet in operation.

You don't hear...

You can't hear it at all ;-)