1、Portable and Ultrathin: The thickness of this A3 light board is only about 4mm/0.2in, more convenient to use and carry. 2、Stepless Dimming: This light pad tracer is steplessly dimmable, and equipped with 37 LED beads with 12000K color temperature. 3、USB Powered: This light pad tracer can be powered via USB cable and USB interface on computer, power bank or 5V USB adapter. 4、Eyes Protection: This tracing light box adopts soft LED light source without flashing. Blue ray filter can effectively relieve eye fatigue after long time working. 5、Multi Purpose: The tracing light box is ideal for stenciling, 2D animation, calligraphy, embossing, scrapbooking, sketching, drawing, streaming, sewing projects, etc. Item Type: Light Pad Material: Acrylic Light Source: LED, 37 Beads Power Supply: Type C Cable Voltage :5V/1A Rated Power: 4.25W Bead Type: 2835 Color Temperature: 12000K Dimming Mode: Stepless Product Size: Approx. 402 x 335 x 4mm / 15.8 x 13.2 x 0.2in ( Manual Measurement, Slight Error May Exist ) 1 x Light Pad 2 x Clip 1 x Power Cord 1 x User Manual