... LED indicator will blink for 3 times.the device is shut down,and files will be saved automatically. D)photo ... don't process to take photo or video ,it will shut off itself in ten seconds ..When battery is low , yellow ... for 3 times, device will save the files and then shut off itself.3.When memory is full, yellow and blue LED ... lights will blink by turn for 5 seconds,device will shut off itself.