MMC Mobile is a type of memory card based on RS-MMC. MMC Mobile memory cards combine the small size of RS-MMC with the high speed of MMC Plus. Physically, they appear identical to RS-MMC. They will fit in an RS-MMC slot and are compatible with all RS-MMC devices.
MMC Mobile cards come in the reduced-size MMC form factor (18 x 24 x 1.4mm). In addition to the required features of MMC Plus cards, MMC Mobile cards operate at both 1.65-1.95V and 2.7-3.6V ranges as a requirement. The smaller size and dual operating voltage ranges are ideal for mobile phone and other portable device applications where space saving and extended battery life are essential.