MAM-A 44168: BD-R 25GB Silver No Stack Ring

The MAM-A line of Blu-Ray Recordable discs features high quality media capable of speeds up to 6x and capacities of up to 100GB. The key technology behind the Blu-ray disc is the blue laser, which has a wavelength of only 405nm (billionths of a meter). DVDs use a pure red laser with a wavelength of 650nm, and CDs use a 780nm wavelength infra-red laser. The benefit of having a blue laser with a shorter wavelength means it is possible to write smaller data pits, and significantly increase the amount of data stored on a disc.