Each spindle contains 50 pieces of Blu-ray Single Layer BD-R 6X write-once recordable discs Stores 25GB of data or up to 5 times the storage capacity of a standard DVD Blu-ray discs utilizes blue-violet laser technology This is NOT a White Inkjet Printable model. JVC Victor advanced media manufactured these BD-R LTH media. The media is manufactured with an organic dye that turns the discs reflectivity during recording from low to high.