1.High Definition and anti-scratch. 2.Large Capacity with 25GB 3.Long service life with up to 30 years

  Blu-ray disc is the data carrier of reading and writing which uses blue laser with wavelength of 405nm, It was defined as the red disc (DVD)replacement because of it's huge storage capacity and higher definition,As a new type of information storage medium,Blu-ray disc is widely used in the material storage by individual and organization and in high-definition movie,Internet,3D technology,press and publication culture industry, And it's the trend of the future audiovisual products.

 Specification for our Blu-ray disc     

Diameter	120 mm
Capacity SL	25 GB
Wavelength of laser diode	405 nm
NA of objective lens	0.85
Cover layer thickness	0.1 mm (SL),
Recording area	On groove
Rotation	CLV
Track pitch	0.32 μm
Channel modulation	17PP
Minimum mark length	0.149 μm
Total efficiency	81.7%
User data transfer rate	36 Mbps
Channel bit rate at reference speed	66 Mbps
Time to recording whole disc at 4X	23min
Record Layer	Inorganic,Phasechange

25GB 4X blank blu ray disc