Features: 1.OPTICAL GLASS PANEL: A4 tracing light pad is made of ABS and PS. The panel is made of enhanced safety optical glass with excellent hardness and light transmission, scratch resistant, energy saving and anti aging. 2.EYE PROTECTION: Tracing light box is embedded with professional protective film and eye protection LED strip with constant current and constant voltage to jointly relieve eye strain in different situations. 3.ADJUSTABLE BRIGHTNESS: Portable art light box supports stepless brightness adjustment, which can be continuously adjusted to the right brightness, and can also memorize the brightness to save time the next time you use it. 4.CLEAR SCALE: A4 LED tracing light pad has sensitive touch buttons with clear scales. Surface with horizontal and vertical scales, making it easier for you to draw accurately in the appropriate position. 5.RANGE OF APPLICATION: Ultra thin copy board table is perfect for weeding vinyl, stenciling, 2D animation, calligraphy, embossing, scrapbooking, tattoo transfer, sketching and painting, and x ray viewing. specification:Item Type: A4 LED Tracing Light Pad Material: ABS, PS Light Source: LED Component 32 Lights Power Supply Mode: USB Voltage: 5V 1A Power: 4.1W Lamp Bead Type: 4014 Color Temperature: 6500k Adjustment Mode: Stepless Dimming Light Strength: 800-3400LX Product Size: Approx. 349x248x7mm / 13.7x9.8x0.3in Work Area: Approx. 316x218mm / 12.4x8.6in PackageList:1 x A4LEDTracingLightPad 2 x Clamp 1 x Power Cord 1 x Instruction Manual NotePlease allow some error due to manual measurement.