This product does not support battery power supply, and a power supply cord is included; This product does not support battery power supply, and a power supply cord is included; This product does not support battery power supply, and a power supply cord is included; This is a three-dimensional large digital electronic alarm clock with complete functions. It can be placed on a flat surface or hung on the wall. Whether it is home or business, it is a very popular electronic alarm clock, with a variety of colors to choose from. The product has a variety of functional designs, such as time memory, countdown, temperature display, date display, alarm clock function, snooze function, loop display, etc., which can meet the daily needs of most people. The alarm clock has three brightness displays, which can be set manually. In addition, the alarm clock automatically enters the night mode at night to ensure good visibility;Can be hung on the wall: the product can be placed on a flat surface or hung on the wall, which can be adapted to various occasions. Countdown: The product comes with a countdown function, which allows you to better grasp the high standard of life. Voice control function: The product can be set to a power saving mode. In this mode, the alarm clock will turn off automatically after 15 seconds, and it can be awakened by voice. Time memory: The product has a built-in memory battery, which can run the time even when the power is off, and there is no need to reset the time after the power is turned on again. Three levels of brightness: The product has three levels of brightness, night mode can be set, and the time can be clearly seen in various environments.