3C Pro 16GB microSD microSDHC Transflash Memory Card Class 4 with SD Adapter & R1 Card Reader Black - Bulk High storage capacity (16GB) for storing essential digital content such as high quality photos, videos, music and more! Optimal speed and performance for microSDHC compatible devices Speed performance rating: Class 4 (based on SD 2.00 Specification) High Quality microSDHC card backed by 2 year limited warranty The MicroSDHC memory module can be inserted into the included adapter and used in other SDHC enabled devices. Also included is a USB MicroSDHC Card Reader / Writer