Features :The low illumination high-definition video, there are three cameras, the front camera is Full HD 1080P, the rearview camera and the inside camera is 720PThe built-in low illumination high previous to light 170 degree wide angle lens, was made by 6 layers of A+ high transmittance glass, add a variety of intelligent processing technology, extreme image, dual camera with all glass4.0 inch IPS HD display screen, noble black design, made of high-quality material, you touch it while giving you a different feel, Slippery and exquisite Support "Picture in Picture" ,two camera can record and display on the screen simultaneously, you can just select two of the three cameras to record and display in the screen(the front and the inside/the front and the back)Support G-sensor, automatically recording video and lock file when the accident occurred, is the best evidence for you High sensitivity parking monitoring Support loop recording Support reversing video camera, connect the red line of the rearview camera to the anode of reversing lights. Insert the car charger, ahine will automatically start recording, when you car switch to R position, it will switch to reverse image automatically Support Motion detection HDR-High Dynamic Range image processing The ultimate video processing ensuring you can record and view clearly on the brightest day and darkest night Impact sensitivity adjustment automatically lock file Drive start simultaneously The biggest support 32 GB TF card (access speed cl10, card not included)USB Function, connect to the computer by USB cable, in the massage mode, you can access video files and photo files, in the PC-camera mode, you can take the photo or make video chat The image monitor the real-time recording output Mainly powered by car charger, automatically turns off to protect the battery when it's down Easy to install with help of the suction bracket While recording, long press the Menu key to lock files, short press down key to shutdown sound, short press the power key to close the screen, short press the up key to switch camera(front & back, back &front, front, back), pause recording, long press the up key to switch video mode(the front and the inside/the front and the back) Specification: Resolution: 1080/720P/VGA Cyclic Record: off/1min/2min/3minEnhanced Night Vision (HDR): on/off Exposure: -3/-2/-1/0/1/2/3Motion Detection: on/off Recording: on/off Date Stamp: on/off License Plate: off/on Gravity Sensing: off/high/standard/low Parking Guard: off/on power off: