Card form factor : mini SD Card Size : 20 X 21.5 X 1.4mm Capacity : 128MB ~ 512MB Interface : SD, SPI, I/O Supported Serial Interface Number of pin : 11 pins Weight : 1.0g Data transfer speed : Read : 6.0MB Write :4.0MB Current Consumption : 100mA Max Operating Voltage : 2.7V to 3.6V Operating Temperature : -25C ~ +85C