Bradley,
I do not like this unit. It has no way of providing a set amount of OA into a hive. Per a UF masters degree student that did extensive studies of OA, it takes 4 grams of OA to properly treat a hive. Only good thing I saw was that it is very portable.
If you want to post videos like this, in the future, do not add the sellers website. You are pushing the advertising aspect too far.
Jim