The Garmin G3X Touch automatically saves flight and engine data to an SD card, recording every second. A new data file is created whenever the system is powered on with an SD card inserted or when an SD card is inserted after the system is running. A 2 GB SD card can hold over 1,000 hours of flight data or up to 1,000 files, whichever limit is reached first. The data files have a .csv extension and can be uploaded directly to FlySto. Garmin recommends using an 8 GB SD card.