Micro SD card is preferred due to its small size, High memory capacity, non-volatile memory, Low power consumption and low cost. So this memory product is used in most of the consumer electronic products.
If you want to make a data acquisition system which should store a vast amount of data then SD card is a very good choice.
This module provide header pins for any MCU to access SD Card in convenient way through SPI interface, it is compatible with 5V or 3.3V level.