Product description: 
 "LHDS-J1 well TV video recording instrument for engineering, hydrology, mining, petroleum, geotechnical, civil and other units of the internal structure of a variety of drilling, drilling, pile, piles, pipelines, geological structure, rock toward attitude of rocks, changes in surrounding rock, rock deformation, formation lithology, rock structure of karst, active faults, fracture situation, laminated fracture zone, karst, underground rivers, groundwater, undercurrents, caves and other geological state detection, and Smart generate dynamic images stored for a long view. 

 Technical parameters: 
 ※ duplex function: simultaneous recording / playback 
 * MJPEG compression format, the image is clear 
 ※ 320G large hard drive, 30 hours video support to 25 / s rate, continuous storage 
 * A variety of recording modes: motion detection recording, manual recording, time course video 
 * Supports power to restore the automatic recording function 
 ※ real-time video, compressed video signals 
 * Supports PC playback and backup 
 * Support for PS / 2 interface mouse, 38KHz infrared remote 
 * 7-inch widescreen FTF LCD 
 * 12V power battery-powered 
 * LCD pixels 480X234pixel 
 The ※ brightness 200CD / M 
 ※ host weight of 2 kg