Blu-ray discs are designed especially to store large HD video and audio files. So, you'll use fewer discs when you're backing-up, recording or duplicating high definition digital recordings - including your music library. Verbatim Blu-ray discs use blue-violet laser technology to read and write data. That means, superb resolution, excellent contrast, vivid colors and amazing sound. All Verbatim Blu-ray discs are backed with a Limited LifetimeWarranty and a 40-year history of quality and reliability.