Specification: Model: A3 Stepless Adjust Brigness, A3 3 Brigness Levels, A4 Stepless Adjust Brigness;  Material: Acrylic;  Size: Approx. 46.5x35x0.6cm/18.31x13.78x0.24";  Wattage: 4.5W;  Light Source: Flicker-free super bright eco-friendly LED;  Adjustable Illumination: Intelligent touch control;  Type: Model;  1: A4 Stepless Adjust Brigness;  2: A3 3 Brigness Levels;  3: A3 Stepless Adjust Brigness;     Features: - Power supply by DC12V cable.  - Super bright & eco-friendly LED ensure extreme low calorific value and life span up to 50000 hours.  - Flicker-Free & no radiation, good for yours eyes especially long-hour working.  - Thin & portable design. Ultra-thin and light weights which makes it portable.  - Touch sensor switch design, dimmable, turn on/off and brightness control easily just by slight touch.  - Professional copy in Animation, Cartoon, Tattoo Tracing, Craft Projects, Fabric Design, Photograph, Film, Slider Transferring; Professional Tracing in Indoor, Architecture, Design and Drawing, and even As X-ray viewer in Hospital.     Package Included: 1 x LED Copy Board;  1 x USB Cable