Verbatim 43748 BD-R DL 50GB 6x - 5 Pack Jewel Case 5 Pack Jewel Case B (Blu-ray)
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. Laser Wavelength: 405nm.