MAG-LOCK offers the strongest magnetic grip of magnetic chargers. Premium hard shell protective finish. Audible chime informs when when it is charging. Starts charging your iPhone the moment it connects. Compatible with iPhone 12 and newer. Raised coil design significantly lowers heat. Integrated rubber pads keeps iPhone from twisting. Built-in USB-C port charges other devices. 6000mAh Internal battery provides up to 32 hours of battery life.