Btopllc 2.5 inch TFT LCD Car DVR with 6 LED lights Road Dash Video Camera Recorder Car Driving Recorder USB Slot Drive Recorder Rotatable LED IR DVR Video Camcorder Traffic Dashboard Camcorder-Black Digital Video Recorder. With 2.5 inch TFT LCD, clearly record and user-friendly. Recording resolution:1280x960 / 720x480 / 640x480 pixels. The high quality video & audio can be timely and strong evidence to address accident and distinguish responsibility. This high definition Rotatable LCD Vehicle DVR with 120 degree wide view angle and InfraRed Night Vision 6 IR LED light Camera captures high definition video and displays it on its 2.5 inch TFT LCD Screen. The video is saved in the SD/MMC memory card. (Memory card no included in the package). Files can be saved per 2 minutes / 5 minutes / 15minutes- with recycled recording. Select 2/5/15 minute to decide how many time will be storage pre one section. Use built-in battery, connect with USB cable of car charger. DVR will record automatically when the car starts, turn off and save the last file when the car stops. This product is manufactured and sold by Btopllc. There include a user manual in the packege for your reference,if you still don't know how to operate, please contact our customer service.