Protection: Automatically detect and support DC5V, DC9V, QC2.0, QC3.0, AFC power input, input voltage mutation detection, overcurrent detection, coil peak limit, overheat limit, to ensure that the receiving mobile phone is in a safe working range.
Multifunction: The clock part is an independent MCU control circuit, with three independent alarms, buzzer, year and month display, Fahrenheit and Celsius temperature free switching, backlight function, time 12/24 standard switching function.