Arduino Data Logger Shield which is designed to use with Arduino UNO, Duemilanove, Diecimila, Leonardo, ADK or Mega R3.

Features:
SD card interface works with FAT16 or FAT32 formatted cards.
SD-Card Reader (kompatibel mit Arduino SD-Library, chipSelect = 10)
Battery-backed real-time clock with DS1307 IC (Compatible with DS1307RTC Library)
Prototyping Area
Operating Voltage: 3.3V
Onboard 3.3v regulator is both a reliable reference voltage and also reliably runs SD cards that require a lot of power to run
Size: 68x53x23mm (approx)

The Shield is completely assembled and comes with Stackable Headers so that further Shields can be added. The button cell for buffering the real-time clock is also included.