15W wireless charging. Applies to phone, watch, earphone and pencil. Overcurrent , Overvoltage , Foreign object  protection. Input: 5V/2A, 9V/2A. Output: 10W; 7.5 watts; 5 watts for the phone, 2.5 watts for the earphone, 2.0 watts for the watch, 0.5 watts for the pencil.