PDXD Mini Cube Imitation Wooden Digital Alarm Clock For Friends and Kids (Black Cover Blue LED) 12/24 hour format selectable(Initial mode:24-hour) DC 6V/500mA(4*AAA)power supply. AAA batteries not included. Built in battery keeping time display program running inside but invisible outside. Come with usb cable only. Charger is not included. SIZE: 6cm*6cm*6cm