Power saving mode: In this mode, the LED turns on when activated by voice (above 60dB), tap, or motion. If deactivated, the screen remains continuously on. Power options: Can be powered via the included USB cable or by 3 AAA batteries (batteries not included). Easy to use: Setting the alarm and time is straightforward. All adjustments are made using the buttons located on the back. The alarm clock features backlit buttons for easy operation in low light. Multiple functions: Displays time (12/24-hour format), date, and temperature (Fahrenheit and Celsius). Includes 3 independent alarm settings. Quiet operation: Silent, non-beeping design for undisturbed sleep and a peaceful working environment. Loud alarm option: Features a high-volume alarm ideal for heavy sleepers, ensuring prompt waking from deep sleep. Reliable wake-up experience: Helps ensure you wake up on time, avoiding missed appointments or important tasks.