Panasonic RR-US570 Portable 1GB IC Digital Voice Recorder 1GB Flash Memory | MP3 Format | Stereo/Mono 287 Hours Recording Time | 45 Hours Battery Life LCD | Zoom Mic | Music File Storage Auto back space | Playback equalizer Max 330mW output power | XP, LP, SLP recording modes Features 5 step speed control | Security Function2 with password Digital Voice Activated System function