Features: 8 hours recording time Two-speed recording Easy connection Multi-line capacity Voice activation Auto level control Monitor while recording Perfect record keeping is vital in today's world. With over eight hours of crystal clear telephone recording per 120 minute tape, the Extended Play Recorder can capture even your longest day. Compatible with single and multi-line phones, this device allows you to review telephone conversations at your leisure. You can even maintain a library of daily tapes. This battery operated unit can also be powered by an AC/DC adaptor. Its compact size and highly sensitive microphone make it a useful companion in business meetings. Voice activation initiates recording automatically and eliminates silent or on-hold periods. Manual operation allows you to start recording silently at any time and automatic level control compensates for poor connections providing the clearest recording of both sides of your conversation. At home or in the office, important conversations are always worth keeping. Be sure to check with your local or state laws regarding the recording of conversations.