Transferring and editing an 8-hour seminar video is too time-consuming... Bringing a laptop to the seminar for recording is too cumbersome... Getting an external Video Hard Disk Recorder is too costly... The answer... Sony HDR -SR1 AVCHD 4MP 30GB High-Definition Hard Disk Drive Camcorder The 5 must-have features I look for in the HD HDD camcorder are: Digital audio/video inputs: Yes (via USB ) Headphone jack: Yes (stereo mini) Microphone input: Yes (stereo mini) Photo Resolution: 4- megapixel ; 2304 x 1728 (4:3) Video recording system: AVCHD ( HD ) and MPEG 2-PS (SD) The 3 reason I want the Sony HDR -SR1 are: Hard Disk Drive Recording for long-hours seminars. Personal video recording in MPEG 2 (DVD) format. Photo Shooting at 4- megapixel quality. Here are the rest of the technical specification... Sony HDR -SR1 AVCHD 4MP 30GB High-Definition Hard Disk Drive Camcorder Product Features Record high-definition video on a HDD with AVCHD technology ClearVid CMOS sensor for high-...