Featuring a minimum write speed of 4 MB/s, Transcend"s standard Class 4 SDHC cards are a smart and cost-effective choice for you to capture and store more of your everyday life without worrying about running out of space. For further peace of mind, all SDHC cards are comprehensively tested for compatibility and reliability, and carry Transcend"s renowned Lifetime Warranty. Each card contains built-in ECC (Error Correction Code) that automatically detects and corrects errors during data transfer, and also utilizes a sophisticated wear-leveling algorithm for consistent long-life operation.