No problem with the seller. The dongle arrived in an envelope directly to the letter in the box with more than 2 weeks ahead of the scheduled date. Monitoring in the carrier was updated timely. Miracast The dongle itself is extra easy to use. The connection with a Lumia 1520 is fast and predictable (2-3 seconds). I do not put 5 because there sometimes key images that jump in the videos but this may be due to the source. Do to be Miracast allows one hand to support an important game devices and also not depend on a wifi-external network. Very handy for traveling presentations. Brief 2 big advantages over Chromecast (without Forgot sharing all the phone parts and not planned). In summary parfais though somewhat expensive.