Cable Length:3.5M Weight:350 Power Source:Corded Electric Built-in Screen:YES Loop-Cycle Recording Feature:YES Audio Recorded:YES NightShot Function:YES Rear Camera:YES Display:IPS Original Package:YES Touch Screen:No Screen Ratio:4:3 Memory Card Required Reding Speed:Class 10 View angle:170 Camera Resolution:2560x1440 Video Code:H.264 Max External Memory:128G Number Of Lenses:2 Pixels:800Mega Display Size:3"-5" GPS logger:none Interface:AV-Out Battery:built-in Assembly Mode:Hidden Type Chipset Manufacturer:Generalplus Frames Per Second:30 Origin:Mainland China Item Type:Car DVR notes If you need 24-hour monitoring and recording, you need to connect to the car's power supply. If you cannot install it yourself, please contact a professional for installation. The length of the rear camera cable is 5.5M WiFi with App Control you can view and download the videos on your smartphone through the dash cam's Wi-Fi and app, no need to take out the TF card to check on the computer. By the way, the Car DVR's WiFi cannot be connected to the Internet, it just supports about 9fts for your to connect to your phone.