The battery-powered vacuum sealer itself is fine given the price and the expectations that you can so to have something realistic. Works, is easy to handle, pulling a usable vacuum from the bags.
As far as - as measured by the price - perfectly fine
From the supplied bags only 2 (= 50%) were useful and also held the vacuum. The other two, the Vakkum is after 5 minutes gone again. Lange tried repeatedly closed properly, tried again ... that are simply not dense. Rejects.
With functional bags prima, with the high committee for delivery but kanns give only 2 stars.
For the supplied bags alone gäbs garkeinen Stern by me