Upow S3 Wireless Charging Pad for iPhone X, iPhone 8/8 Plus, Samsung S7/S7 Edge All Qi-Enabled Devices Wireless Charging: Starts the moment you place down any Qi-enabled device or device equipped with a Qi-compatible receiver. No cables or USB interface required Smart IC: high efficiency energy management system design maximizes the output as required and minimizes energy consumption when idle with LEDs charging status display Ultra Compact: Only 0.39in thin, coffee cup coaster size (3.0*3.0*0.39in), 1.32oz, delivers a modern, premium appearance, making it simple and fashion LED Indicator Lights: Blue means it's ready to charge, green is charging, and both together let you know your device is fully charged. Blinking lights mean an unsupported device has been detected For stable charging, we adopt silicone anti-slip mat in surface, and 1.5A input current is required. 1.5 A or higher current (like 2A) AC adapter (Not included) is recommended, Protective Case is suggested to be removed during charging