16GB Turbo Speed Class 6 MicroSDHC Memory Card For BARNES & NOBLE NOOK BOOK eBOOK READER. High Speed Card Comes with a free SD and USB Adapters. Life Time Warranty. 16GB Micro Card Class 6 Manufacturer Team Group + Free High Speed USB reader. Only 10% the size of a standard SD card. Built-in Error Correcting Code (ECC) to detect and correct transfer errors. Supports Content Protection for Recordable Media (CPRM). LifeTime Warranty.