Instant Recording When Calls Are Answered. ‧ Storage Capacity Up to 500 Hours. ‧ Recordings are stored in First In / First Out basis, thuss assuring perpetual recording without replacing the removable CF Card. ‧ Download Recordings to PC for Archiving and Data Basing. ‧ "Instant Save" and "Instant Delete" Buttons. ‧ Instantaneous Replay of Conversations . ‧ Search Recordings by Time, Date or Telephone Number. ‧ Record from Analog and digital telephones, cellular phones. ‧ Built-In Microphone for Room Recording. ‧ Password Protection.