1 year warranty. 15W wireless charging. Applicable to phone, watch, earphone and pencil. Over-current protection. Over-voltage protection. Foreign-object protection. Input: 5V/2A, 9V/2A. Output: 10W; 7.5W; 5W for phone, 2.5W for earphone, 2.0W for watch, 0.5W for pencil. The Wiwu M8 PowerAir 15W 4 in 1 wireless charger offers convenient, fast, and safe charging for your phone, watch, earphone, and pencil. With a 1 year warranty and over-current, over-voltage, and foreign-object protection, you can trust in its reliable and efficient performance. Its impressive 15W wireless charging capability guarantees a quick and hassle-free charging experience.