The 4GB microSDHC Card (Class 6) is fully compatible with SD version 2.0 and comply to Class 6 speed standards, offering guaranteed write speeds of at least 6MB/s to ensure your device remains quick and responsive while saving, copying, recording or viewing files. Extra-large storage capacity allows you to use your portable device more effectively, with the added convenience of being able to store hundreds more music files, video clips, pictures, games and personal information. This card is the perfect compliment to your high-end SDHC compliant devices.