Double layer disc offers high-capacity storage, enough for 4.5 million printed pages or four hours of DVD quality video. Seamless continuity from one side to the other with no need to flip the disc over. Write-once format provides secure, unalterable storage. Designed for video recording and data storage, making it the perfect choice for presentations, medical imaging and records, catalogs, customer records, and more. Enjoy increased efficiency from having more files on fewer discs.