auto set alarm clock

Auto-set clocks receive time signals and set themselves to the correct time automatically. When DST is enabled they also adjust for Daylight Saving Time so you don't need to reset the clock manually.

Displays range from standard digital readouts to larger 'jumbo' LEDs (for example, a 1.8" display). Many models include multi-step dimmers or multiple brightness settings (such as a 4-step dimmer) to make the time easier to read in different lighting and from across a room.

Most include a standard alarm and snooze. Some models offer two separate alarms so you can set different times (for example, weekday and weekend schedules).

They typically support both 12- and 24-hour formats and offer multiple time-zone settings; one product description specifies four time-zone options.

Auto-set clocks can be wall-mounted or placed on a desk or bedside table. Some electric models include a battery backup that stores time and alarm settings during a power outage but does not power the display.