Huion A3 Thin Light Box LED Light Pad Light Tracer for Artcraft Tracing Animation Drawing Sketching Calligraph Large Working Area: 16.9X12.2incheswithdiagonalof21.46Inches. The dimension is 19X14 inches withdiagonalof23.62Inches. The Color Temperature is cold white 10000-13000K. Adjustable Brightness: Comes with a touch switch to control the brightness. Keep pressing the switch to adjust the brightness from dim to bright. Diversified Applications:Ideal for 2D animation, Stenciling, Calligraph, Embossing, Tattoo Transferring, Sketching, Drawing, Sewing Projects, Stained Glass, Quilting, X-Ray Viewing and so on. AC Powered and Precise Scale for Measurement: It is powered by a 12v US power adapter which provide evenly illuminated surface. The maximum brightness reaches to 4050 Lux. LongLifeSpan:Generatelittleheatafterlonghoursworkinganditcanbecontinuoususedabout50,000hours.1YearWarranty.