Featuresr wpc qi compliant wireless charger allows to charge any qi enabled devices such as for nokia 920 nexus 457 htc 8x and so onr adopts smart identification system while its transmitter and receiver unit adopts uart universal asynchronous receiver transmitter encrypted transmission control signal which is stipulated by wpcr with ventilation holes at the bottom of the charging mat excellent heat dissipationr over 70 high efficient energy conversionr mini pocket size ultrathin