This device I bought out of curiosity (and to conserve the micro USB connector). Degree ', it has arrived so quickly upped the ante even my Nexus 4. Has to load immediately started as promised. Also an interruption of the charging process by a call made from nothing. Unit upped the ante again and charging was continued.
To make you have to say that I have the Nexus 4 in a protective case that is approximately 1.5mm thick. This also makes no problems.