Featuring a Lucite edge and solid center pad, this convenient item will fast charge your iphone 8/8plus, Iphone x, samsung galaxy S7/S6/Edge/plus, Note 5, Nexus and all Qi enabled devices at a fast charging speed. The input voltage is 5V/2A, transmission Distance of 8 mm, Output of 5V/1.5 A, Charger efficiency of 73%. Built-in over-voltage, under voltage and short circuit protection. Put your logo on it fast! 4" Diameter