1. A4 Light Pad: 5.5mm thickness, portable, easy to carry. With clear scale design. High brightness, meeting the requirements of most people. Rounded corner edge, safe to use.2.Stepless Dimming: Touch-sensor switch design, only need to touch the button to adjust LED light until you get the required brightness you want. The light box with memory function, you do not need to adjust the light again when you use it for next time.3.Eco-friendly LED: Super bright environment-friendly led, life up to 50000 hours. No flicker, no radiation, no harm to your eyes, especially working in long hours.4.Convenient to Use: Can be powered by USB cable, easy to access to any USB port like computer, laptop, mobile phone charger, power bank, etc.5.Wide Application: Can be used for sketching, drawing, 2D animation, cartoon, calligraphy, architecture and clothing design, industry, DIY diamond painting, X-ray viewing and so on.