I received Consumer Associates Essential Oil Nebulizer, in exchange for honest review from Tomoson. The nebulizer requires assembly. The parts include the USB power supply (and wall charger); the base; oil holder, and top. The nebulizer differs from a diffuser because it does not use water. You fill the base of the nebulizer with essential oils and then turn it on. The nebulizer comes with four modes, including a continuous mode (hit the button four times).
Since there is no water, the smell of the oils is stronger and you don't have to operate it as longer. For stronger oils, such as lavender, I had to turn it off before the cycle completed. You will have to dump out the oils after 24 hours of being in the nebulizer.
The nebulizer was easy to assemble and use. The scent fills the room faster than a traditional diffuser. I did have to be more careful when using the nebulizer around the kids because of the glass top and oil holder. The top does fall off with the slightest touch.