1. Compliant: with the SD Card Association card 2. Speed: Up to 5MB/sec. read rate, Up to 1.5MB/sec. write rate 3. Secure: built-in write-protect switch prevents accidental data loss 4. Voltage: 3.3v; Reliable: five year warranty 5. Simple: as easy as plug-and-play 6. Economical: low power consumption is easy on device's batteries 7. Capacity: 128MB-8GB.