Maximum 960 hours time lapse recording on a standard 120-minutes VHS format video cassette 11 different time lapse recording/playback modes are available Audio recording and playback in L6H, L18H, L30H Real Time modes are available Easy mode setting and checking on screen display Built-in time / date generator Built-in rechargeable backup battery (1 week) Auto repeat recording & one shot recording (960-hour model) Alarm recording (recording duration is adjustable) Timer recording (9 program / 1 week) Series recording Record lock function for avoiding unintended operation Four-head double azimuth system (EP 4 Head System) Diamond like carbon coating on upper cylinder Video loss display Throughout video signal to monitor without additional power source Security lock function for preventing the video cassette theft