Verbatim 96434 bd-r 25gb 4x branded 1pk jewel case, blu-ray disc is the next-generation optical disc format that was developed to enable recording & playback of high-definition video (hd), as well as storing large amounts of data. A single-layer blu-ray disc can hold 25gb, which can be used to record over 2 hours of hdtv. Blu-ray uses a blue-violet laser to read & write data while current optical disc technologies such as dvd use a red laser. The shorter wavelengths of the blu-ray technology make it possible to record more data on the same space. These discs are safeguarded by verbatim¿s super hard coat which protects against everyday wear & tear. With the rapid growth of hdtv, blu-ray will meet the consumer demand for recording hd programming & is expected to replace vcrs & dvd recorders over the coming years.