100GB per sheet, 12 hours worth of terrestrial digital storage! 3-layer Blu-ray disc that also supports storage of 4K programs This product is a BDXL standard compliant triple-layer Blu-ray disc for recording with a capacity of 100GB and a large capacity. With more than twice the capacity of single-layer or double-layer media, you can store plenty of high-definition data. Since it is a write-once type for one-time recording, you do not have to worry about erasing important programs, and you can additionally dubb as many times as you have free space.