Features:1. Adjustable brightness on a perfectly even illuminated surface 2. Automatically dimming design， smartly memorize the brightness of your last use 3. It gets very little heat and is very suitable for long hour working4. Hidden LED design， the unique light patterns provide enough brightness and diffuse reflection effect by joining the middle tile open honeycomb cushion， which make the light more mild and at the same time， protect users eyesight 5. Eyesight-protected technology 6. Come with an USB cable makes you can not only plug it into the wall charger， but also your computer7. Super slim design makes it easier to carry around8. Special acrylic anti-scratch and anti-slip for professional artistic design 9. The auxiliary settlements are practical and dependable， while the surrounding degree marks are precise and accurate 10. Ideal for a wide variety of tasks including arts， crafts， design， drawing， stencilling， tattoo and photo workSpecifications:1. Active Area: (8.27 x 12.20)" / (21 x 31)cm(L x W)2. Size: 17.7"3. Light Source: LED 4. Working Voltage: DC5V 5. Rated Power: 1W 6. Dimensions: (36 x 27.2 x 0.5)cm / (14.17 x 10.71 x 0.2)" (L x W x H)7. Weight: 24.69oz / 700g 8. Color: Black Package Includes:1 x Huion 17.7 Inches Ultra Slim Art Craft Tracing Tattoo Light Box Pad Board -L4S USB