1、Support for automatic focusing within effective range for easier and more efficient operation. 2、Rotating telescopic fixed focusing structure, support for multi-rate stable operating, easy to use. 3、Suitable for jewelry identification, density inspection, archeological research, outdoor biological observation. 4、This portable 5MP 500X digital microscope ensures high definition, more convenient to use. 5、Support for automatic fine adjustment and manual focusing, the multiple window can know the magnification. Item Type: Microscope Model: A005 + Material: Aluminum Alloy Photosensitive Chip: 5MP Magnification: 1/10~500X (Continuous Zoom) Focal Length Range: 0mm~∞ Focusing Type: Automatic Fine Adjustment + Manual Focusing Photo Pixels: 2592x1944, 1600x1200, 640x480, 320x240 Picture Format: JPGE, BMP Video Pixels: 640x480 Video Format: WMV, DZC, 3.6G / 11 Hours Recording Speed: up to 30f/s Light Source: LED (Adjusted by the adjustment knob on USB) Interface: USB2.0 Voltage Source: 5V USB DC Power Supply Operating System Requirements: Support for Windows XP SP2 or higher, for OS x 10.5 or higher, for Linux Software Languages: English, Chinese, Japanese, Spanish Software Package: Software (with measurement function) Size: Approx. 19 x 120 mm / 0.8 x 4.7 in 1 x A005+ Microscope 1 x CD 1 x Instruction Manual 1 x Plastic Ruler