New, Unopened Panasonic PD Cartridge Media LM-R650J 20 Discs (in boxes of 10) Format: Unformatted ⭐️ I purchased these as spares for data storage, but I no longer need them, so I am selling them. ⭐️ PD cartridges made by Panasonic, the developers of PD. "PD" is a recordable optical disc developed by Panasonic. It uses phase-change recording technology for data recording and is rewritable, allowing for repeated recording and playback. - Brand: Panasonic - Model: LM-R650J - Type: PD Cartridge - Capacity: 650MB - Features: Rewritable Thank you for viewing.