What makes this diffuser different from water-based ultrasonic diffusers?
It uses fragrance oil without adding water, so there is no tank to refill or dilute the scent. This design can reduce mess and simplify upkeep, but it also shifts responsibility to oil management and refill planning.

Does it work with essential oils or only fragrance oils?
It is designed for oil-based scenting and performs best when used with oils intended for cold-air diffusion systems. Oils that are too thin, too thick, or not meant for atomizing may deliver inconsistent results and should be chosen carefully.

How does the timer and intensity control affect daily use?
Intensity levels shape how noticeable the scent becomes, while the timer limits operation to a set session rather than continuous running. This is useful for predictable scent windows, but it does not replace automated repeating schedules.

Is it quiet enough for bedrooms and night use?
The unit is designed to be whisper-quiet, making it suitable for low-noise environments. The light ring can be turned on or off, though some spaces may still prefer it off to keep the room darker.

What should be considered before buying fragrance oil for it?
It requires a sufficiently large oil fill to diffuse properly, so small bottles may not be practical for normal use. Since fragrance is not included, ongoing operating cost depends heavily on oil choice, concentration, and how often sessions are run.