Transcend"s 4GB microSD High Capacity (microSDHC) Card is based on the SD 2.0 standard and comply to Class 2 speed standards, offering guaranteed write speeds of at least 2MB/s to ensure your device remains quick and responsive while saving, copying, recording or viewing files. Its 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.