The breathalyzer is packed in a branded box. Does his job. In the evening I drank 0.5 vodka in the morning I had to get to work by public transport. Even milk did not help, although it became much less. Let's see how long it lasts. I took it specially without a mouthpiece because they get lost and dirty all the time. And you don’t want to carry a set of mouthpieces with you forever. This is if a friend or someone else needs to be checked (indulged), saliva exchange and all that. The other breathalyzer had batteries that lasted for a week, I was tormented to change them. So I took the battery. And it is also compact, takes up little space in my pocket, which is very important for me.