*The 5 Core wireless charger accommodates a phone case up to 4mm thick. It can charge through protective cases that are less than 4 mm thick. *Safety is our top priority; so we use exclusive 5 Core technology in our wireless charger. This advanced technology provides surge protection; temperature control; and other safety features. *Our wireless charging station features an efficient USB-C plug that follows the latest trend in USB interface technology. We have upgraded the regular USB-micro plug to the newest USB-C plug. *The 5 Core charging pad is sleep-friendly. Once it recognizes that your phone is charging; the LED will turn off to ensure the charging process is sleep-friendly.