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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 offer 3 to 5 times the storage capacity of a standard recordable DVD disc, enabling the recording, rewriting and playback of high definition video (HD).

Verbatim BD-RE DL 50GB 2 x 5 Pack Jewel Case. Native capacity: 50 GB, Wavelength: 405 nm. BD-R write speed: 2x, BD-RE write speed: 2x. Quantity per pack: 5 pc(s), Package type: Jewelcase

Native capacity	50 GB
Wavelength	405 nm
Printable	No
BD-R write speed	2x
BD-RE write speed	2x
Quantity per pack	5 pc(s)
Package type	Jewelcase