3 Level Dimmer & Energy Saving: Equipped with a touch sensor and 3 levels of dimming function. High uniformity light, no flicker, reduce eye fatigue. Depending on the usage environment, you can adjust the brightness to your preference. The buttons are designed to be flat so they dont get in the way when tracing. 3 brightness levels can be adjusted to fit your desired brightness. Built-in 21 flicker-free LED bulbs, perfect lighting, ultra-bright and no flicker. 【Eye-protection Construction & Scale Design】The guided light box uses special built-in filters and constant current technology to eliminate eye pain and fatigue, ensure stable brightness and avoid strobe light. In addition, the scale is designed every 0.04 inch (1 mm) on one side, making it more precise for professional construction and drawing. Wide range of uses: Enjoy animation, manga, embossing, sketching, film, illustration, x-rays, tattoos, calligraphy, handicrafts, copying sutray, surveying, architectural design sketches and drawings, DIY handicrafts, etc. Easy to apply to professional painters, designers, artists, college students, kids and more. Ultra Slim: The A4 size tracing table is very slim. Thickness is controlled within 4mm Thin and lightweight, it is convenient for storage, cleanup and carrying. USB Cord Power Supply: Comes with a 3.3 ft (1 m) USB cord, so it is easy to store and easy to carry, and you can charge it easily by plugging it into a power bank or computer anywhere you want. We offer a 12-month free warranty, so if you have any defects on the product or have any questions prior to purchase, please feel free to email us through Amazon. We will respond immediately.