Mobile DVR ROCEWELL D1 H. 264 real time vehicle car hard disk mobileDVR Could be added 3G GPS function. ( wireless remote track surveillance auto alarm linkage download. Model: RC-8004HSY-G Brand: ROCEWELL ShenZhen QiCheng Intelligent Technology Co., Ltd Function: I. Video output, could playback II. Video form: D1. CIF III. Voice output IV. Humanized software of playing, easy operate V. Intact and reliable record of event handily to research VI. Intact time, record of date, could direct display on screen VII. Wide voltage input design( 8V-36V) VIII. Promptly work with power IX. 2.5 inches SATA interface to save data X. 4 group alarm I/ O input, buzzer built in XI. Could upgrade by USB XII. Aluminium alloy, convenience to set up Dimension: 200mm X 170.60mm X 43mm Net weight: 1.2KG Could be added function of 3G + GPS( support domain name) Warranty Service: -12 months ( for quality problems only) -All products will be repaired for free if in warranty date except artifical damage. -Preserve forever Please contact us if you have any problem about our product.