This is an 8 gig microSD memory card. It's perfect for massive datalogging without taking up a lot of space.
These microSD cards have a simple to use SPI interface allowing any micro to read and write data.
It even comes with an SD card adapter and a USB adapter!

Includes:

• 8GB MicroSD card
• MicroSD Adapter
• USB adapter

Features:

• Class 4 (up to 4MB/s read-write)
• 8GB Storage