SD card interface works with FAT16 or FAT32 formatted cards. 3.3v level shifter circuitry prevents damage to your SD card

Real time clock (RTC) keeps the time going. The battery backup lasts for years

Included libraries and example code for both SD and RTC mean you can get going quickly Prototyping area for soldering connectors, circuitry or sensors.

Onboard 3.3v regulator is both a reliable reference voltage and also reliably runs SD cards that require a lot of power to run

Works with for for arduino UNO,with Duemilanove,with Diecimila,with Leonardo or with ADK/Mega R3 or higher.with ADK/Mega R2 or lower are not supported

Battery not included