10 Pack Smartbuy M-Disc DVD 4.7GB 4X HD 1000 Year Permanent Data Archival/Backup Blank Media Recordable Disc Media Type: DVD Top Surface: Semi-transparent Read Speed: 16x | Write Speed: 4x Capacity: 4.7 GB | Recording Time: 120 Minutes Quantity: 10 Pack | Packing: CakeBox/Spindle