Upgraded A4 LED Light Tracing Drawing Board, Ultra-Thin Dimming USB Power Art Craft Scaled LED Light Pad for Tattoo Drawing, Diamond Painting, Streaming, Sketching, Stenciling (A4-New). 【Energy Efficient LED Dual Strip Lights】LED writing pads use energy efficient flicker-free LED lights, dual strip light design for even illumination and higher brightness, providing a perfectly flat drawing surface.