I purchased these in bulk, but they became unnecessary due to equipment updates. I've been storing them at home since then, but I'm selling them to declutter. 【Product Name】 DVD-RAM (without cartridge) LM-AF120K10 【Product Condition】 The 10-disc pack is unopened, and the bonus 1 disc is unused, having been taken from the 10-disc pack. 【Product Description】 ・Quantity: 10 discs + 1 bonus disc ・Copyright Protection: CPRM ・Standard: DVD Media RAM / Capacity: 4.7GB ・Type: For AV use / Recording Surface: Single-sided, single-layer / 2x speed ・Disc Surface Printing: Not possible ・Country of Origin: Japan High-density recording enables a large capacity of 4.7GB on one side, achieving 120 minutes of long-duration digital recording. DVD-RAM uses a method of recording on both land and groove to enable large-capacity recording. It achieves a recording density with a minimum mark length of 0.42μm and a track pitch of 0.615μm. Furthermore, by bonding two 0.6mm substrates together, a highly reliable disc structure is achieved that prevents disc warping. Rewritable approximately 100,000 times for both AV and PC use. High durability allows for rewriting more than approximately 100,000 times for both AV and PC. In addition, it is equipped with a high data protection function that automatically skips and records over defective areas on the disc. Maximum 22Mbps high-speed transfer rate achieved by our phase-change technology. The DVD-RAM recording method employs the phase-change method we have cultivated. It enables 1-beam direct overwrite, which allows data to be recorded and erased simultaneously by changing the intensity of the laser light, and records and plays back large data such as images at a maximum 22Mbps high-speed transfer rate, which is twice the 11Mbps maximum transfer rate required for MPEG2 image recording. Copyright protection using CPRM technology. By adopting CPRM (Content Protection for Recordable Media) technology, it is equipped with "copyright protection technology" that allows recording of video that has been granted permission for one-time copying.