This Transcend SDHC-card with 4 GB of storage capacity corresponding to the Speed Class 10, and achieves data transfer rates of up to 20 MB / s read and up to 16 MB / s when writing. The stamp-sized SDHC card can be used in many digital products such as MP3 players, mobile phones, PDAs, digital cameras, camcorders, and navigation systems. The card provides fast, reliable data transfer when copying, downloading and backing up.