I bought these intending to record, but they weren't compatible with my home recorder. The package has been opened. 5 discs. These are for single recording, CPRM compatible. Dual-layer (DL) on one side, so you can record for 3 and a half hours continuously. I tried to record with only one disc in the recorder, but it didn't work. Please understand the above before purchasing. I plan to send them via Yu-Packet Post.