Genuine Thinkware 64GB micro SD card with adaptor A memory card is an essential component in your dash cam. It acts as a backup system where the video files created by your dash cams are stored, so that you are well-protected with evidence. Thinkware class10 microSDHC cards are a faster, higher capacity version of the standard microSD memory cards. It is highly recommended to use a Thinkware SD card in a Thinkware Dash cam - which is guaranteed to work in Thinkware cameras.