✔ENERGY EFFICIENT: Bright white LED lights are in the light up box for extra uniform light coverage and brightness. ✔POWER: The light up sign can be used with either USB charging cable or 6 x AA batteries to take the glow with you wherever you go. ✔LETTERS: 90 interchangeable letters, numbers symbols and color emojis make the LED cinematic box perfect for you to create your own messages. ✔PERFECT: The message box light is perfect for weddings, birthdays, home, store, cafe and parties. ✔MOUNT HOLES: The A4 letter light up box can free-standing on a desk, table or mount to a wall using the mount holes.