2.4g Digital Wireless DVR

We are offering 2.4g digital wireless dvr. (1) supports the ntscpal video output; (2) four cameras at the same time display; (3) supports synchronous audio recording and video recording function; (4) support system information displayed on the screen (osd) function; (5) support 32g sd card; (6) support real time clock display; (7) cmos image sensor; (8) support can be set to any time mobile video detection function; (9) support circular coverage function; (10) support the single screen video can also record audio; (11) 7 inch 800*480 hd resolution lcd display;