Fast Erase AC Adapter&mdashPSPLFH0142 sold separately Optional Headset Weight&mdash4.2 oz. (without batteries) Includes end-of-tape/no-cassette warning built-in microphone LED record indicator LED battery indicator external microphone jack quick record/quick review easy one-handed control. Easy one-handed control Slide switch. Recording Functions: Quick Record Telephone Record Activation/Review Functions: Cue & Review Quick Earase Quick Review Voice Activation Foot/Hand Controls: Hand/4-position slideswitch Recording Time: N/A.Unit of Measure : Each