From a functional point of view I would give the device every five star. A few small details in the processing have the Berwertung tasted the fifth star: Display poorly visible (false Viewing Angle): Was not a problem for us because we have connected the scanner TVOUT the projector and have held a family home evening. The slide valve is broken off after the 5th time plugging - not a functional problem. for transportation, we have a Tixostreifen stuck over it to prevent dust from coming in. Geschwindigeit: approx 200Dias / 2,5Std. Picture quality, contrary to expectations very good for the price! It's just beautiful, all Erinnnerungen of easy to view as formerly without annoying construction of canvas and devices. Thank lg Simon