Compact & Hidden Design: With slim and compact design (3.58x1.3x1.1in), the mini car camera takes up tiny space in your car, the hidden camera is mounted behind the rear view mirror and goes virtually unnoticed, which won't obstruct your vision while driving. Loop Recording & Free 64GB SD Card: When the SD card reaches the storage limit, the new video will automatically overwrite the old one. Once you encounter a sudden jolt/collision, view it in camera file and download, it will automatically save the video in Album, won't be overwritten. To make you use the car recorder faster, we provide a 64GB SD card, you don't need to buy this extra card, plug and play. If you use another SD card, please remember to format the SD card, support up to 128G. WiFi-App Control & Share: The dashcam has built-in Wifi for easy App connection.