Style: Cyberlink + 1 Pack Bluray MDISC 25GB BD-RThis product is a bundle. The bundle includes a 1 pack of Blu-ray M-DISC BD. The Slim Portable Blu-ray Writer model number is WP50NB40. The color of this portable rewriter is black and packaged in a retail box. The retail box includes a USB 2. 0 cord, installation disc and quick installation guide documentation. The drive supports BDXL format. A BDXL 100GB disc is equivalent to 21 DVDs or 4 Blu-rays on just 1 BDXL disc.