Specification: Material: Acrylic USB Input Voltage: DC 5V Adapter Input Voltage: 100V~240V Adapter Type: US plug Size（unit: mm） ① A5: 240*150*3.5 ② A4: 335*235*3.5 ③ A3: 430*345*4.5 Package Includes: 1 x Led Drawing Board 1 x 1.5M USB Cable Function: Touch sensor switch design, turn on/off by simply one touch and brightness controlled by touching several seconds to choose the level you need. It is normal that the edge of light board get warm while working, please do not worry. Applications: ◆ Great tool for diamond painting kit ◆ Professional copy in animation, cartoon ◆ Tattoo Tracing, Stencils, Embossing Craft Projects, Fabric design Note: 1. Handle with care. Do not use sharp metal objects please to prevent scratch on work surface. 2. Use on a security and stable platform. After use, please stored in a safe and dry place. 3. If the light is flicking after powered on, it means the power input doesn't match with this product. You may replace the charger, charging treasure or computer interface.