Visit Amazon site : http://www.amazon.com/gp/product/B00IEGUOF8?tag=gallianostore-20<br /><br />M-DISC 4.7GB DVD R Permanent Data Archival/Backup Blank Disc Media - 20-Pack<br /><br />Engraves and stores data for over a 1000 years M-Disc Ready Drives Duplicators required <br />Data stored in an M-Disc is readable with current DVD drives <br />Composed of chemically stable and heat-resistant materials that are not used in any other DVD or optical disc <br />Cannot be overwritten erased or corrupted by natural processes Passed US Department of Defense rigorous test <br />DVDR 4X 47 GB can store up to 8000 photos 240 minutes of video or over 100000 documents
