Digital Telephone Phone Call Recorder SD Card USB Call Recording Logger V2 Secure digital Phone Recording Device , up to 170 hours of Phone Call Recordings on a 1gb memory card (340 hours on 2GB SD card!) Caller ID, digits dialed, time, date, duration and comments stored. Auto start/stop record using line current detect or voice detect. Supplied with Intelligent Recording's world renowned XtR Desktop Phone Recorder Software for call search/playback and management on PC The SD Recorder Telephone Recording Device connects directly to analog line or to digital/IP telephone handset cords.