I purchased directly from VEVOR about 1 month ago, and so far, it works GREAT. We've been into the diffusers since October last year and have an Aroma 360, and a Scentiment unit both work great, but I liked the idea of using Bluetooth to control the unit. That's when I purchased the Nebu Luxury unit which has Bluetooth control. I needed another Bluetooth unit and happened upon an ad for the VEVOR unit. Boy, I'm sure glad I did. It's the same as my Nebu unit, at a much lower price. It runs 7 days a week on a schedule which I setup using the app. For the person that did not get a user's manual, download the \"Scent Maker\" app for your phone. I love the VEVOR scent diffuser.