Led work indicator:when the power is on, the indicator light will be turn on green light, when you put mobile phone on to charging. The weak blue light flashes slowly until it is fully charged. The weak light will not affect your sleep.Safer and Easier to use:exclusive multifunctional Intelligent protect technology provides temperature control, surge protection. besides that, this wireless chargers is made of abs material which is fire resistant, and has a ul certificate, dual safety provide you safety experience. To get better experience, we would like you to take off the phone case and use the adapters recommended .Case friendly: fast charging is also available even you have a phone case. Wireless chargers have a 5mm sensing range, which means the charger can detect your device in a 5mm range and start charging. Therefore, it is necessary to ensure you have a thin case of less than 5mm.Compatible devices:Compatible with galaxy/iphone8/iphone 11/lg