Better visibility: The digital LED wall clock features a bright LED display with clear, easy-to-read indication of time, calendar and temperature, ensuring you are always informed at a glance. > Sound control function: In normal mode, press [DOWN] to activate power-saving mode, after turning on the clock, the constant light will stay on for 15 seconds, then the LED display will automatically turn off. If the sound reaches 75 dB or more, the LED will continue to light up. Functional versatility: This electronic wall clock not only displays the time, it also serves as a calendar, alarm clock and temperature gauge, offering several useful features in a compact device. Customizable display: Adjustable LED lighting allows you to adjust the brightness to your preference to ensure optimal visibility while minimizing any disturbances during the night. Convenient power source: This clock can be easily powered via a USB cable, making it compatible with different power sources such as laptops, power banks and AC adapters. Enjoy the convenience of a reliable solution for measuring time without worrying about replacing batteries.