Product Details: Specifications: Display: 6.5-inch LED Brightness: 3 levels adjustable Time display: 12/24 hours Date display: Snooze function: adjustable 5 - 60 minutes USB charging port: 5V 1A USB output interface design is adopted. Battery: AAA dry battery Night mode: automatically display low brightness at night. (Night: 18:00 - 6:00) Operation settings: Press the MODE button to switch the following sequence to enter the corresponding function: clock mode - date mode - temperature mode - night mode on / off Time setting: Press the MODE button to enter the clock mode, long press the MODE button to enter the setting state, and adjust by the UP / DOWN button. The setting order is: 12/24 hour conversion - clock - minute Date setting: Press the MODE button to enter the date mode, long press the MODE button to enter the setting state, and the button to enter the setting state. The setting order is: year-month-day [5 display modes]: This upgraded alarm clock has 5 display modes: clock mode, alarm mode, date mode, temperature mode, night mode, which can meet your daily needs. [Dual power supply mode]: Supports USB power supply and AAA battery power supply. When using AAA batteries, this alarm clock has a time memory function; when using USB power supply alone, there is no memory function after power failure. Note: When using battery power, please turn on the power saving mode (the display will automatically turn off after 16 seconds of no operation), otherwise the screen will always be on and consume a lot of power, which will bring you unnecessary battery costs. [Large LED display]: This digital alarm clock is equipped with a large 6.5-inch screen and large fonts, allowing you to easily read the digital display. [Brightness and night mode]: The digital alarm clock provides 3 different brightness levels, which can be manually or automatically adjusted to a comfortable brightness to protect your eyes and save energy at night. [Weekday mode]: This alarm clock also comes with three weekday alarm modes. You can set the time interval: Monday to Friday, Monday to Saturday, and Monday to Sunday.