Scan resolution: 300dpi, 600dpi, 900DPI Scanning range: A4 (216mm) Scanning speed: color 900DPI 12 seconds / page color 600DPI 8 seconds / page color 300DPI 3 seconds / page Expanded memory: Micro-SD / TF (1G-32GB) Transmission : USB2.0 Weight: about 140g System environment: 2000 / ME / XP, X, 128 MB RAM, 1000 MB HDD One-click scanning mode switching and high, medium and low resolution settings, easy to operate You can view the number of scanned in real time without installing any professional driver software colour:red material:ABS size:25.5*3.3*3cm Package Contents: 1 * Document Scanner 1 * USB data cable 1 * Calibration card 1 * Storage bag 1 * Clean cloth 1 * Instruction Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.