Features: Snooze for Heavy Sleeper: No fixed snooze time, the snooze time can be set to 5 -60 minutes as your preference. 2 USB Charging Port: The built-in 2 USB charging ports allow you to charge two electronic devices at the same time, which reduces the waste of adapters and saves space. Cell Button for Backup: The cell battery works for memorizing the time, date, and alarm settings in case of a main powered outage. 12 and 224-HourSwitchable: 12 Hr or military time display, If 12 hour system is selected, the screen will display AM and PM to distinguish between morning and afternoon Box Packing : Alarm clock x1 USB charging cable x1 Button battery x1 Instruction x1 Remind: The power adapter is not provided! The clock is only powered by a 5V adapter.