Alarm Digital Clock for Kids Bedrooms Auto DST, Alarm, Calender, 12/24 Hour, Backlight, Volume, Colors, USB. Kids Alarm Clock with 7 Colors Changing Kids digital clock, different options from solid color numbers and numbers that change colors. Also for Heavy Sleepers Adults Teens. 4 Kinds of Adjustable Backlight With attached power adapter for full functional screen, the backlight is adjustable: from HIGH to OFF. The battery (not included) is mainly used to back up data, such as date, time, and alarm. 3 Kinds of Adjustable Volumes It has different volume setting to set the alarm lower or higher; 55-70-90DB, Loud-Super Loud-Crazy Loud. Alarm Clocks for Bedrooms with USB Charger Alarm Clock with Snooze, USB Typ-C Charging. Perfect for any room, large numbers that are easy to read. Compact Size: 5.5 in*0.9 in*2.2 in.