This is a 3-layer Blu-ray disc that comply with BDXL standards, with a capacity of 100 GB and large capacity for recording. Over twice the capacity of one or two layers of media, so you can store plenty of data in high vision. It can also record new 4K satellite broadcast (*1) starting on December 1, 2018. It is a single time recording, so you dont have to worry about extinguishing your important program, and you can dubb it as many times as you have plenty of space. 1. The new 4K satellite broadcast is a 4K broadcast of BS, 110 degree CS. Requires a new 4K satellite Blu-ray recorder for recording