Koolertron 2.7" 1080P HD GS9000 Night Vision Car Vehicle Recorder DVR Dash Cam with GPS G-sensor Built-in GPS function recording travel speed, driving track With G-Sensor to keep the record of sensor data at emergency cannot be cover Powerful document protection function. The video will be saved intactly even though there are power outages or machine damage occurred under recording Can be charged through auto cigarette power supply, recording while driving is also available Automatic circulating recording, making it able to set the record time for each file