Auto/Manual Dimmable - The fourth generation LED light source is used to provide 3 levels of brightness. The large brightness sensor can be sensitive to external light, so the led digital wall clock can detect the change in brightness from day to night and realize the automatic brightening or dimming of the display brightness of 3d small alarm clock. Built-in power-off/temperature/date/alarm memory function, which can be used to save the setting record before power-off within 4-8 hours after power-off tension. It is not necessary to reset the time after power off. At this time, the storage battery also starts charging automatically. Can be used as a wall clock and desk clock: The package is equipped with non-marking hooks and expansion screws. You can easily hang the led small alarm clock on the wall as a wall clock as needed. At the same time, the support frame can support the 3d alarm clock to stand on the desktop. Used as a desk clock, desk and other household items. It is the best choice for living room, kitchen, school, gym, etc.