Car black box C900 car camera recorder with parking mode & g-sensor car security camera

1.Please remove off the car lighter charger with your car when you don't use this dvr device like paking,otherwise when your car engine start big instant electricity current probably burn out your dvr. 

 2.Whatever SD card is empty or not,you must format the card at the first time in dvr MENU settings instead of formatting it on computer,after formatting you can start the dvr to do recording.
  
3.Please check if your memory card is original brand high speed Class 10 memory card, if you use some copy card like Class 4 or Class 6, it will indicate SD card full because it is not compatible.