HD portable DVR with a 2.5-inch TFT LCD, featuring cycle recording. - Model Name: HD DVR - Screen Size: 2.5-inch TFT LCD - Recording Method: Cycle recording - Compatible Memory Card: SD/MMC card, up to 32GB - Interface: USB 2.0 x 3 I purchased this but never used it, so I'm offering it for sale unused. (Operation has not been confirmed.) I also don't know how to use it, so I'm looking for someone who can confirm its functionality and use it themselves.