Supports 16MB to 512MB xD cardsUp to 5 hours 30 minutes recording with 16MB card in DSS formatInsert index marks to quickly retrieve specific sound bitesStore and organize files in 5 folders up to 199 files per folderVoice activation records sound as soon as built-in mic picks it up20 hours of recording/play on 2 AAA batteries (included)Includes USB cable and DSS Player CD