TCL DVR is designed for connect TCL car camera which can record your road and provide proof for emergency event with high video definition. You can use it to preview video at 720P@30fps and set car params and browser&playback videos&photos&events, And we integrate map(using GPS)function in our app that can sync with video playback at the same time. Also you can share the nice moment to your friends or social platform freely.notice: continued use of GPS running in the background can dramatically decrease battery life.