Please note that this item does not come with an arduino (you need to use the shield), or SD card.
It does have the RTC battery, however. Now, the geology of fire to all components of the welding and testing, but not installed head.
You need some basic soldering skills to put it together, but even if you do not have much experience, you can get it within 15 minutes to complete.
SD card interface with FAT16 or FAT32 formatted card. 3.3V level shifter circuit to prevent damage to your SD card
Real-time clock (RTC) to maintain the time, even when the a rduino is unplugged. Backup battery lasted for many years
Including SD card and RTC libraries and sample code means you can get fast
Welded joints, circuits or sensors prototyping area.
Built-in 3.3V regulator is a reliable reference voltage, and a reliable operation, requires a lot of power to run the SD card
Compatible with arduino UNO, Duemilanove, Diecimila, Leonardo or ADK / Mega R3 or higher. ADK / MEGA R2 or lower is not supported.