A3 Large-size Light Box LED Artcraft Tracing Light Pad Stepless Dimming Eye-protecting Pad for Tatoo Diamond Jewel Paint Drawing Sketching Animation Features: Power supplied by USB cable, convenient to access to any USB port like computer, USB plug or even power bank. Lightweight and large size with 11.8 * 15.7" illuminated space, convenient to draw the pictures, handwriting, and other activities. High transparent acrylic panel with great toughness & durability. Stepless dimming, the light is eye-protecting and efficient. You needn't install any software, insert the plug and turn it on, let's start the creative work. Specifications: Material: Acrylic Light Source: LED Illuminated Space: 30 * 40cm / 11.8 * 15.7in  (W * L), 50cm / 19.7in (Diagonal) Working Voltage: DC 5V(not included) Interface: Micro USB (like computer interface, power tank, etc.) USB Cable Length: Approx.1.5m / 59in Item Size: 40 * 33 * 0.35cm / 15.7 * 13 * 0.1in Item Weight: approx. 500g / 17.6oz Package Size: 44 * 33 * 3.5cm / 17.3 * 13 * 1.4in Package Weight: approx. 620g / 21.9oz Package List: 1 * Light Pad 1 * USB Cable Note: For power supply, we just supply you with a USB cable, you can powered with the universal phone adapter, power tank or other USB interface. The package only includes the light board and USB cable.