These discs, branded as "TDK Life on Record" are capable of storing 25GB of data or 135 mins of HD video.Key Features25GB capacity4x recording speed25 pack, supplied on a spindleTDK Blu-ray discs, featuring DURABIS2 technology, make recording HD video and backing up large data directories possible. Each single layer 25GB disc provides 5x the storage of a conventional DVD allowing for 2 hours of HD quality video while supporting a throughput of 72Mbps.The exclusive DURABIS hard coating formulation protects the media surface against scratches and other contaminants while the advanced spin coat manufacturing process and ultra-precise recording materials create an extremely smooth and precise cover layer.