1 Unknown batteries required.

10 high-grade rewritable BD-RE discs with a one hundred year archival life and OEM drive certified Utilizes Super Eutectic Recording Layer (SERL) recording dye, which minimizes noise during write/rewrite cycles and provides superior archival stability Blazing drive speeds allow up to 25GB of storage space to back-up your video, music, photos and more

1 high-grade non-rewritable BD-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 Media discs with up to 100GB of storage space to back-up your HD video, music and photos with superb resolution and amazing sound quality.