Secure Digital High Capacity SD 2.0 (SDHC) cards are designed to  be used in compatible digital camera's, portable music players, camcorders, smartphones, PC's or other consumer applications. SDHC cards use a FAT32 file system, a specification that was established for applications with higher capacity needs and are especially suitable for high-quality video. The increasing use of high- definition video, high -resolution digital photography and mobile applications demands higher storage capacity and more demanding data transfer rates.     
Because of this, SDHC cards guarantee a minimum sustained data transfer speed, not a maximum speed.

This Road Angel MicroSD card has been specifically designed in tandem with Road Angel to work harmoniously with our Halo series DashCams, ensuring super- fast read and write speeds to ensure all data is captured for you, the way you expect.