The advent of Blu-ray technology has led to the introduction of high capacity storage discs to meet the demand cause by the rapid growth of high definition television (HDTV). Blu-ray discs get their name from blue laser technology. The shorter wavelength of the laser is the reason it is blue in colour. The blue laser has a wavelength of 405nm compared with the wavelength of 650nm for DVD which utilises red laser technology. The benefit of having a blue laser with a shorter wavelength means it is possible to write smaller data pits and therefore vastly increase the amount of data on the disc. Blu-ray discs offere 3 to 5 times the storage capacity of a standard recordable DVD disc enabling the recording rewriting and playback of high definition video (HD).- Laser Wavelength: 205nm. - Hard Coat protective layer. - Extremely long archival life. - Excellent playback performance.- For use in BD writers and recorders. Rewritable Blu-ray Disc with Hard Coat Protection for a longer lifetime and 1000 rewrites. BD-RE discs come with SERL (Super Eutectic Rcording Layer). The recording layer is returned to perfect condition on every erase cycle leaving a flawless disk for the next recording.

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