Model Number: GP1900AF Max Paper Size: A3 Sensor Element: CMOS  Resolution: 4896*3672 (18 Mega pixels) Scan Speed: About 1s Image Color: 24 Bit Scan Medium: Documents, bills, ID cards, notes, photographs, magazines, books, 3D objects, etc. Functions: Intelligent trimming correction, auto focus, front and back combination, barcode identification, 2D barcode reading, stamp tool (electronic signature), watermark, PDF, video, OCR recognition, book scanning flatten, remove finger marks, etc. Image Format: JPEG, GIF, BMP, TIF, PDF, etc. Document Format: PDF, WORD, Excel, TXT Video Format: MP4, AVI Scan Mode: Color, grayscale, black and white, and delete the background Base: Soft mat