Rechargeable Battery Powered - This light tracing box let you enjoy the convenience of working wirelessly at anywhere you like with the built-in battery, works for approx 3.5 hours after fully charged. Battery and USB mode are both available. | Ultra Thin and Portable - Thickness 8mm; Work Surface 12 by 8.5 Inches, fit on A4 size sheet; Weight 0.82kg. Accurate Positioning - Measure scale is attached, benefiting the accurate positioning in drawing creation. | Eyesight-Protected LED Technology - High quality acrylic panel allows light to be introduced from both sides, and with dodging LGP, the light is more even and light source is more stable. Maximum Brightness - 4000 Lux. | Stepless Adjustable Brightness - LITENERGY Light table is adjustable with all Levels for adapting to different environments; Gradual Light Changing with Touch Sensitivity, simply a better way to find your ideal lighting; Remember your favorite brightness, the brightness you know when you open it next time. | Diversified Usage - Designed for drawing, sketching, stenciling, 2D animation, cartoon, portrait, tattoo tracing, sewing, quilting projects, fabric design, X-ray viewing, photograph, slides viewing, calligraphy, embossing, scrapbooking and much more.