SelfSet technology automatically detects the correct time & date upon plug-in and maintains through power interruptions * Long-lasting battery backup immediately restores alarm & clock settings in case of power failure (lithium battery included) * USB port for convenient smartphone charging * Large 1.2" LED display with option for 180-degree swivel time projection on walls & ceilings * Digital AM/FM radio with phase-locked loop tuning & 20 station memory; Automatically adjusts to Daylight Savings Time & pre-programmable daily dual alarm with weekend cancellation