Name: Handwritten message light box Product light source: LED Output voltage: DC 9V with a USB cable Battery capacity: 3 AA batteries Illuminated at night: built-in Led light, can be used as a night light. Hanging decoration: there are nail holes in the back. You can hang , make a calendar or decorate. Free DIY: You can wirelessly match your alphanumeric according to your mood. A variety of power supply methods: USB plug or battery. USB and Battery Style(battery not included) Support Battery and USB Powered colour:Black + white Material:Acrylic + ABS size:31*21*5cm Package Contents: 1*LED Light Box 1*USB Cable 1*Mark Pen Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.