Professional Ultra SanDisk 32GB MicroSDHC Card for HTC Thunderbolt 4G Smartphone is custom formatted for high speed, lossless recording! Includes Standard SD Adapter. (UHS-1 Class 10 Certified 30MB/sec) This SanDisk MicroSDHC card is specifically designed for the HTC Thunderbolt 4G! Share your content collections with friends, family and colleagues easily. SanDisks removable storage solution specifically designed for mobile phones with expansion slots. Its ultra-small size consumes very little power from your handset, to give you longer battery life on your phone. Now you can instantly move pictures between multiple devices for sharing and printing using this card as well.