I purchased this item and used it for about 3 months, but I no longer need it and have been storing it, so I am selling it. I cleaned the main unit and mouthpiece after each use, but please only purchase if you understand this. I only have used mouthpieces, so please do not purchase if you are concerned about this. The box is not included. Anyone can use it by downloading the official app. Please check the official app and website for instructions on how to use it. - Brand: AIROFIT - Model Name: Airofit Active - Color: White and Black - Accessories: Mouthpiece (used), Instruction Manual