SD card comes with error correction (ECC), ensure the transmitted data is more stable. ^^
Write speed performance rating: Class 4. Read speed up to 24MB/s. ^^ SDHC SD memory card compatible with all SDHC devices, such as cameras, CNCs. Not compatible with standard SD devices. ^^ 4GB storage capacity, real allowable 3.7GB. ^^ 1 year after-sale service