A high-efficiency chipset provides 10W high-speed charging for Samsung Galaxy, while iPhones get a boosted 5W charge that's 10% faster than other wireless chargers. PowerWave 10 transmits charging power directly through protective cases (Max. Case Thickness: 0.2 inches). LED indicator illuminates so you know your device is being charged. With overvoltage protection, temperature control, foreign object detection, and more, you and your iPhone are fully protected.