5 high-grade non-rewritable DVD-R discs with projected lifetime of several hundred years (based on ISO/IEC 16963 testing) | Stored data is engraved - ultimate archival solution. Impervious to environmental exposure, including light, temperature and humidity | Single-layer discs with up to 25GB of storage space to back-up your HD video, music and photos with superb resolution and amazing sound quality. | Withstood rigorous testing for durability by US Department of Defense | Verbatim has been a leader in data storage technology since 1969, and guarantees this product with a 10-year limited warranty and technical support