A3 Dimmable USB Charging Drawing BoardUSB A3 three-speed ultra-fine dimming + 1.5m USB cableThe light box is eye-protected, portable, durable and easy to use. The stepless brightness design increases the accuracy of your drawing. You can adjust the brightness by simply pressing the button until you get the brightness (from Bright to Dark). for stenciling, 2D animation, calligraphy, embossing, scrapbooking, transfer, sketching, drawing, sewing projects, stained glass, quilting, appliqu, X-ray viewing, etc.+ productMULTIPLE USE: For stenciling, 2D animation, calligraphy, embossing, scrapbooking, transferring, sketching, drawing, sewing projects, stained glass, quilting, appliqu, X-ray viewing, etc.STEPLESSLY ADJUSTABLE: Perfect for people who want to adjust the light to their liking. Turn on/off and control the brightness easily with a light touch.EASY POWER SUPPLY: By connecting to the USB port of computers, USB adapters or even power banks.EYESIGHT-SAFE DESIGN: With advanced eyesight-protecting technology designed to eliminate eye strain. Brighter, more moderate. Flicker-free, no glare, no shadow.Features-Material: Plastic.Size: 47 x 37 x 3.5 cm (L x W x H).-Working voltage: DC5VPower: 5.4W