These discs, branded as "TDK Life on Record" are capable of storing 25GB of data or 135 mins of HD video. Key Features 25GB capacity 4x recording speed 10 pack, supplied on a spindle Supplied in a standard cakebox TDK Blu-ray discs, featuring DURABIS2™ technology, make recording HD video & 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 72 Mbps. The exclusive DURABIS hard coating formulation protects the media surface against scratches & other contaminants while the advanced spin coat manufacturing process & ultra-precise recording materials create an extremely smooth & precise cover layer allowing for 10, 000 re-writes without loss of quality.