3 alarm clocks with snooze functionThe alarm clock has three independent alarm times. You can set 3 alarms in one day to plan your time accordingly. You can also press the "SNOOZE" button when the alarm sounds to get 1-60 minutes extra sleep time, or press another button to cancel the alarm. Voice Control and Power Saving Mode When Running on battery, you get an additional feature - voice control, which means you can activate some sounds like hand clapping, tapping on the table or touching the clock. In addition, when on battery power, the LED alarm will automatically turn off and enter sleep mode after 16 seconds of inactivity, but the system will maintain normal time and temperature and retain its previous settings. Adjustable brightness in 2 LevelsYou can adjust the brightness in 2 levels. Also, in night mode, the bedside alarm is automatically dimmed between 6:00 p.m. and 6:00 a.m., but you can set other times if you like. Simply press and hold the snooze button for more than 3 seconds to turn off the display and prevent it from lighting up at night. (Note: When you work with wired power, the clock will stay on). Wide Display Multifunction The digital alarm clock has a large LED display and simultaneously displays the time and temperature on the same screen, allowing you to can see it at a glance. Our smartwatch has 5 modes: clock mode, date mode, temperature mode, night mode (on/off) and alarm mode. The buttons on the back are self-explanatory, so setup is a breeze! USB AND BATTERY OPERATED This LED clock comes with a 1m/39.37" power cord (AC adapter not included) - ideal for saving battery. If powered by USB only, it has no time memory function when powered off. But if you use AAA batteries (not included) to power it, it has time memory function.