The RITEK Blu-ray Disc blank media series will take your high-definition (HD) video recording and multiple gigabyte data archiving to the next level. Using the revolutionary new blue-violet laser technology, RITEK"s Blu-ray disc has 25GB of capacity on a single-layer. With five times the storage and three times the transfer rate of a normal DVD, RITEK"s Blu-ray disc is the best and fastest choice for handling large amounts of data. To truly imagine the capacity of a Blu-ray Disc consider that it can store 25 million pages of text. Or 83,000 300-page books. A Blu-ray disc will store over 4.5 hours of HD video or about 11.5 hours of SD (standard definition) video on a 25GB disc.