features:
*crisp, high quality images
*simple operation and installation
*light and easy mobility
*equipped with anti-fog, non-spherical lens
*super-wide automatically adjusting-focus lens
*handpiece holder with automatic power-off function
*the computer with usb receiver can receive the image signal from several freeze devices in long distance.
*with specific remote control and external infrared sensor.
*there are display of 4 transmitter channels and multi-function buttons on md-330.
*the up-down pages can be controlled by buttons of handpiece.
*with quickly deleted image, re-captured and enlarge function.
*can be stored 4x28 pcs pictures totally.
*it can be changed to each other easily between single or quarter screen.
*the captured images can be wireless transmit to database of pc in long distance.