Introduction of memory card
Built-in memory runs stably and can avoid incompatibility, but built-in memory cannot expand memory. If you use the external memory of the driving recorder, you must plug in a memory card. Generally, driving recorders have their own small memory, such as 5 12M or 1G, with a maximum of 2G, which is mainly used for testing functions.
The memory of driving recorder is very small, so it is generally necessary to add a memory card to use it. The size of the memory card can be determined according to your own needs. General HD video, 4G card can play 2 hours of video. If it is to record the driving situation in a cycle to prevent touching porcelain and the like, then 2 hours of recording is enough. If you want to take some pictures along the way, you need a bigger card.