Digital Alarm Clock, Digital Clock with 3 Brightness Levels, Electronic Alarm Clock Powered by USB or 3 AAA Batteries (NOT INCLUDED), Snooze Alarm Clock with Sound Control and LED Display Power Saving Mode: The digital alarm clock automatically enters power saving mode when powered by 3 AAA batteries (not included). It does not disturb your sleep since the digital clock does not light up at night unless you wake it up (any sound above 60 dB nearby). Digital Alarm Clock with Large Screen: The electronic alarm clock has a large 17 cm LED display. You can change the clock format for 12 or 24 hours. There are also the 3 levels of brightness for your need, which makes it easier to read. The ultra-thin body is ideal for a bedside table or desk. A good option that reminds you to take a break.Digital Clock with Sound Control: With the sound control feature, any sound above 60dB near the clock will wake up the alarm clock LED. The screen will automatically turn off after 15 seconds in power saving mode, while you can also set the alarm clock to continuous brightness when powered by USB. Snooze Alarm Clock: You can set the 3 alarms to wake up better. If you don't want to get up immediately after the first alarm, the other two alarms will wake you up after a snooze. Long press ALARM to set alarm time and snooze time. Use "UP" and "DOWN" to set the hour and minute. The snooze time is from 1min to 60min each time.